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Post by headman on Jun 24, 2009 23:41:41 GMT -5
Hello SCOOTDAWG FORUM,
I am Kevin Welch, part of the ENDRIGO Bolt-on Port and Polished Head Kit development team of Dave Endrigo, Nancy Endrigo and myself.
***The reason we developed this kit is to offer a simple to install, cost effective alternative to the 4 valve head and to UNLEASH the POWER of the stock GY6 HEAD***. This resulted in serious hill climbing, higher speeds and an unexpected sustained increases in fuel economy. Our primary test vehicle was a 2007 TJ Power Sports Hammer Head Extreme Sports 150cc min-buggy; to assist in the development we also use a 2006 Tank Urban Racer DS 150cc. An exciting byproduct of this development is the increased fuel economy (I have achieved consistant 104+ mpg with stage I and consistant 99+ mpg with stage II's). Here is what we have available for 150cc GY6 SCOOTERS and MINI-BUGGIES:
1. STAGE I, performance prepped, +8% hp, +7% torque and sustained 104+ mpg.
Contents: one 57.4mm GY6 professionally port/polished head/intake manifold combo, 3 angle performance valve job (large valves), head gasket, intake gasket, exhaust gasket, intake and exhaust bolt studs, intake nuts, special intake spacer, new valve train installed (except cam) and ignition timing hardware kit. This kit has the following options:
a. Stainless Steel valves, 10% valve train weight reduction
b. Heavy Duty springs, required for certain race cam use
c. Titanium retainers, additional valve train weight reduction
This kit will further benifit from the use of a performance exhaust, performance intake and will require a rejet.
2. STAGE II, RACE prepped, +18% hp, +11% torque and sustained 99+ mpg.
Contents: one 57.4mm GY6 professionally RACE prepped port/polished head/intake manifold combo, multiple angle race valve job (large valves), head gasket, intake gasket, exhaust gasket, intake and exhaust bolt studs, intake nuts, special intake spacer, new valve train installed (except cam) and ignition timing hardware kit. This kit has the following options:
a. Stainless steel valves, 10% valve train weight reduction
b. Heavy Duty springs, required for some race cams
c. Titanium retainers, for additional weight reduction
This kit needs a performance exhaust, performance intake and correct jetting for the full RACE performance to be fully obtained.
3. STAGE II+, high compression RACE head, adds additional .4 hp.
Contents: contents are the same as the Stage II kit except that the mead is milled .025" for an additional point of compresion (which in a 150cc engine that stock, puts approximently 6 hp to the ground = .4 additional horse power, incredible additional gains are also availble from dialing in the timing).
4. STAGE III, professionally prepped FULL RACE port/polished head/intake combo. Not yet tested on the dyno, however, the flow bench says no futher improvements can be made.
Contents: one 57.4mm GY6 FULL RACE Head with .025" milled, utilizing an oversized valve setup and a 30mm Aluminum intake manifold, multiple angle full race valve job, head gasket, intake gasket, exhaust gasket, intake and exhaust bolt studs, intake nuts, new valve train installed (except cam) and ignition timing hardware kit. This kit has the following OPTIONS:
a. Stainless Steel Valves, reduced valve train weight and resistance to cyclic and heat stresses
b. Heavy Duty valve springs, required for some race cam use
c. Titanium retainers, reduction in valve train weight and increased resistance to cyclic and heat stresses
WARNING: to obtain this level of Top End Performance some low end torque is sacrificed; additionally, a free flowing exhaust, free flowing intake, correct jetting and timing are essential for the FULL RACE performance levels to be obtained. This kit is also suitable for use with Nitrous or other forced induction systems.
I am an aircraft mechanic of 20+ years, I have been an off road enthusiast and a motorcyclist for 36+ years and I have never experienced a bolt-on component that does as much for a vehicle as our STAGE I kit; the stage II, II+ and III are simply just over the top.
I have video info and dyno printouts which I will post shortly.
I welcome any and all interest in these new and exciting products; P.M. or email me for pricing or additional information @ "GY6HEADquarters@yahoo.com". ;D
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Post by performancescoot on Jun 25, 2009 0:32:55 GMT -5
I realize this is a "commercial", but the stage ll milled modification is by far and away the best bang for the buck on these engines. I do this very thing at my shop and my completely stock shop bike (or customers bike) with just this head modification all day long will out run any 150cc bike with just "bolt ons".
I'm not sure what this guys pricing is, but if anyone is interested what I charge, just PM me.
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Post by usfmarine on Jun 25, 2009 10:49:00 GMT -5
Everything above my comment belongs in the dealer advertisement section.
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Post by YellowScooter on Jun 25, 2009 11:10:25 GMT -5
Hey performancescoot, I pm'd ya.....
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Post by harrywr2 on Jun 25, 2009 13:16:21 GMT -5
MSRP of $499 with special introductory pricing of just $350. If I just tack that onto the $250 for a Dancatalysts's camshaft and another $300 for a programmable CDI...just $900.
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Post by JR on Jun 25, 2009 15:03:27 GMT -5
Dang Harry I can almost buy two 50cc scooters for that!! JRR
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Post by kliff on Jun 25, 2009 15:10:11 GMT -5
Hey Headman....so what valve springs and retainers are you using? All the "big timers" tell you what goes in your engine. They ain't worried about anyone else knowing what components they use, cause they have confidence in the quality of their work, making the difference, and the pride to show they use the best.
What about your valves? SS, cool....but who makes 'em? Let's see some price justification. You should be proud of what you produce, and the thought you've put into parts matching.
Surely you're not gonna say, "well buy one, then you'll see...." are you? You're making advertising claims, let's see just what the root of those claims are.
How about some pics of your work, the components. We did have a guy here once, amde all kinds of claims, but always balked when asked for pics, or substantiation.
Come on man, pics and vendors....where's the details?
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Post by indy50 on Jun 25, 2009 21:49:34 GMT -5
pm'd dude for prices and info for my application.... and I gotta say, my money will stay in my wallet I might change my mind when I see video documentation of this 90mph 1/8th  |
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Post by JR on Jun 25, 2009 22:32:16 GMT -5
Well if it is old Jake at least he's came down a bit!! It used to be 100 MPH+ LOL JRR
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Post by usfmarine on Jun 25, 2009 22:50:57 GMT -5
right on kliff.
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Post by numbski on Jun 26, 2009 6:52:55 GMT -5
I'm getting rumblings of a local here in St. Louis that claims he's got his 150cc doing 90mph. Might get to check that out first hand...
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Post by kliff on Jun 26, 2009 12:30:09 GMT -5
Headman....still waiting on those dyno sheets to be posted, vendor listings, oh and don't forget pics man. Products, tooling, shop.....
A backyard shop is cool man, just show us where ya work. Hell in my last 30 odd years in the same building, equipment has come on and gone as projects, points of interest, or contractual R&D has changed..... now, me & the ole man, sometime wonder how we had so much in there as we had..... but I guess if you remove all his "hobby" wood working equipment, and his "Police" car.....you can see where we had all sorts of stuff going at on time.... hell I even remember on of our first old South bend lathes.....ooops wanderring again...
Post up some pics man, PM & Email don't cut it in a community like this, automaticly looks like you got something to hide. Bring it all out, be up front, or be square...
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Post by headman on Jun 26, 2009 14:42:15 GMT -5
About the Endrigo Head and the man who made it, Mr. Endrigo:
A bit about Endrigo (who the Head is named for) and then a list of some of the mods that were made to this head.
Dave Endrigo is a 58 year old car nut that started playing with cars in 1964. In 1983 he started Flow Technics with ran for 24 years. He later left Flow Technics to start another corporation in which he co developed a patented water cooled marine catalytic converter. Additionally he invented a manifold for Professional Products for the LS engine series and a carb insert called the Air Flow.
He does complete dyno-tested engines for people who of course feature his ported and flow bench tested heads. He has experience porting heads and building complete engines from 50cc to 588 cubic inches, 1000 hp (1 4bbl and no power adders).
His clients have been racers in NASCAR, APBA, SCCA, WOO, limited sprint cars, mini stocks, NHRA, AMA, hill climbers, auto crossers, street rods, motorcycles, hot boats, etc. He has helped several teams win championships, building them heads that set track records, (some in Australia), and had a high horsepower mark at a California engine builders dyno. To condense things one could say he is an engine building, head porter, inventor, fabricator and innovator that loves to make things “better an faster”.
Here is some history on myself,
I am an aircraft mechanic/machinist of 23 years and I desired to do something fun with my 2 children before it is too late. I chose off-road mini-buggies; off roading and motorcyling have been hobbies of mine since I was 8 years old when I received my first mini-bike. I had promised my kidos several years ago that I would buy them full suspension go-karts and that they would have the most fun in the world while becoming better drivers. What I realized is that they were in fact too small then to operate that type of vehicle. In the spring of 2008, I took them to a local mini-buggy distributor and took them both for a ride and confirmed my suspicions, they were in love with mini-buggies. Ten days later I acquired a 2007 TJ Power sports HammerHead Extreme SS 150cc and 2006 Carter Brothers Talon GTX2R 150cc. The first time hitting the trails I was already seeing some limitations (I weigh 275 and each of children cash in at 125ish pounds). The main limit that I saw was the HILL. These buggies were fun right out the box but a bit docile. I did the usual stuff, slip-on exhaust, uni air filter, Bando coil/wire, NGK Iridium core plug hot/no rev limit CDI, synthetic oil, synthetic transmission fluid and some good rubber. I had a reasonably good idea what I needed to do based on my experience and what I read on this forum. I wanted to see what this GY6 power plant was capable of (not the transmission). I approached an acquaintance, Dave Endrigo (the local authority regarding anything related to port/polish, engine builds and general engineering) with the HILL dilemma. I knew that the solution was to make more torque so I asked Mr. Endrigo to prepare a performance port and polish on these components. I also informed Stu of our intensions to see if he might be interested in marketing such a product. I was correct; a day or so after delivering a stock head, valve train and intake manifold to Mr. Endrigo he called me and told me it was ready.
I installed the new components and remember quite vividly my initial impressions (when I say that I installed this component I will add that the jetting needs to be spot on for the optimum performance). This was the single most impressive bolt-on component that I had ever used. This buggy was now alive and extremely fun to operate. I now found these buggies as a very good investment and wondered if it were possible to increase the horse power to weight ratio high enough to give a 250 a run for its money? So I let Mr. Endrigo know how well this performance head was working and asked him if he thought he could make more gains, he was confident that he could obtain higher levels of performance; I supplied a second head, valve train and intake manifold and he expeditiously turned out a race port and polish head with a matched intake manifold (this set up did require a free flow exhaust to achieve full potential). I knew that this "stage II" set-up was not going to be for the faint at heart and enthusiastically installed and rejetted the buggy.
Oh my God!!! "This head was madman", this was about all I could think or say for the next three days testing the head on the buggy. This same buggy which was once docile and then became a usable off road machine was now a dirt spewing, mud balking non-stop tyrant of power (that is what my seat of the pants said). I took pleasure in explaining to Mr. Endrigo that the new driving experience was not only successful but at times out right scary: the test vehicle is my daughter's 2007 HammerHead 150cc buggy and this thing was now stump/pulling “like a madman” (more like I wished it had been brand new out of the box), I couldn't stop my amazement with this setup. My 11 year old son told me after tearing it up by himself, stage II is too fast, and he wanted to know if it was O.K. to just use stage I in his buggy!
Later testing on a 2006 Tank Urban Racer DS 150cc equally impressive but unveiled some characteristics which I had previously overlooked. The Tank scooter was in good material condition, ran pretty good stock but struggled on inclines and only pulled a modest 60-65 mpg, with the stage I setup it jumped to 104mpg (in town driving it like I stole it) and rolled over the most devastating hills with throttle to spare. I thought that there must be an error so I ran tank after tank for the past 6 months through the scooter attempting to correct or find the error: I consistently pulled 104 or better mpg, tank after tank, driving it as hard as I could with my 275 pounds of body, trunk, saddle bags and all storage areas full of various items! With this revelation stage I took on a new value to me, I was very much enjoying purchasing a gallon of gas every other week.
I later installed the stage II setup on the scooter, wow, I was riding 2 up (two 270+ bodies, no lack of torque, no lack of hill killing power); performance did drop with the STAGE II to 101 mpg but I am still happy with the tons of power and 101 mpg still drops everyone’s jaw when I tell them.
Mr. Endrigo and I conceded that we were on to something and decided to let Arron (Scootdawd moderator) know how well the results had turned out and had proven it on the dyno. I shared the dyno results with Arron and was given permission to share the information in this forum.
Thanks for the interest, stayed tuned.
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Post by Aaron on Jun 26, 2009 19:26:39 GMT -5
I did in fact authorize headman to open this discussion thread about his new heads. I asked him not to discuss pricing issues just yet so others posting about their offerings please refrain from doing so. This was intended to generate interest and discussion about headman's heads. I will host and post the dyno results for him.
Aaron
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Post by Aaron on Jun 26, 2009 19:49:24 GMT -5
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Post by headman on Jun 27, 2009 1:48:22 GMT -5
Thanks Aaron, Just so everyone knows what those chassis dyno printouts are for, I will explain. All where performed on my daughter's 2007 TJ Power sports Hammer Head Extreme Sports 150cc GY6. The setup remained the same throughout the test except for three things; the Head/Intake manifold (OUR KIT) and the jetting of the stock carb. -The 7.28 is the stock HEAD/manifold, to the wheel hp. -The 7.87 is the Stage I HEAD/manifold, to the wheel hp. -The 8.60 is the Stage II HEAD/manifold, to the wheel hp.  The following is the list of components which were installed during all dyno testing: Uni 3"x4" dual stage air filter, stock 24mm CV jetted, FMF slip-on Bando coil/wire/boot, NGK Iridium plug,stock CDI, stock timing and a completely stock transmission. Here is the good news for all of you Scootdawg 125/150cc GY6 readers; looks like you won't have to rely on my honesty for much longer, as several of your members are more motivated to power up than others. Thanks for the continued interest. I will get more of the requested media posted ASAP! ;D |
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Post by kliff on Jun 27, 2009 16:23:53 GMT -5
Good deal headman... I'm not one easily impressed by self serving statements, so quite often I'll be ole phart to jump in and say "show me..." It offends a lot of folks, and a lot of folks take it to higher authority, but being this is a web based society, anyone can claim anything, names can be thrown around, etc. I wanna see pics, proof, vendors names, etc. Ihope you do well, I see you have Aaron's ear, so we'll definitely need to guarded in future responses to you, but that's just the way of things, now isn't it. Good luck, and since you are staying within the rules, I'll just shuddup. Who ever heard of anyone ever questioning the validity of a web salesman anyway....my gawd! What is this world coming to.... Good Luck Man |
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Post by harrywr2 on Jun 27, 2009 23:51:54 GMT -5
Here is the good news for all of you Scootdawg 125/150cc GY6 readers; looks like you won't have to rely on my honesty for much longer, as several of your members are more motivated to power up than others. Yeah...I'm still waiting on the longetivy reports for all the Dawgs that bought the 206cc multi mondo GY6 from kspower that everyone was enthralled with. So far the best any one has reported is they managed to get 10 miles. The mods here let stand claims that it would last 10K plus miles. A $1000 for 10 miles...WOW |
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Post by medman1952 on Jun 28, 2009 1:46:24 GMT -5
This will be interesting to see some discussion on.
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Post by odie2ooo on Jun 28, 2009 2:24:48 GMT -5
I have 50 miles from my motor I bought at ks. my starter just went out tonight so we'll see once I get a new starter and go from there.
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Post by mrsg on Jun 28, 2009 14:07:21 GMT -5
I find it very fun to tinker around with 150cc engines ans see what i can get it to go.
But if i am going to be spend $1000's, i think i would just go buy something that would go buy a 250cc and mod it some, or a burgamn 400/650
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Post by usfmarine on Jun 29, 2009 0:20:23 GMT -5
Since we've read the claims, and you've posted the dyno, why not post the prices for the products? Or do we each have to PM him asking for prices? Lets not waste ours or his time, let him post the prices since this is a moderator-endorsed ad.
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Post by moot on Jun 29, 2009 8:30:56 GMT -5
how did this thread even get this far without pictures?
I also agree price should be posted, along with pics.
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Post by headman on Jun 29, 2009 17:24:22 GMT -5
Thank you for letting me know what specific types of information/photos that you may be interested in. I will continue to provide as much of the information requested as possible. I have more photos to add and am interested what you would like to view?  The following link is to our photobucket, this link shows some snaps of our Machine shop focusing on the main machines used to fashion these heads: s789.photobucket.com/albums/yy171/GY6HEADquarters/?action=view¤t=6e17841d.pbw&t=1246386375Please continue to let me know the specific information that your are interested in so that I can provide it. Thanks again for your continued interest.  |
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Post by usfmarine on Jun 29, 2009 21:19:51 GMT -5
I'd be interested to see some before & after photos showing how your porting affects the shape/texture of the head. And again, some prices |
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Post by odie2ooo on Jun 29, 2009 22:07:22 GMT -5
Even thought this is a moderator endorsed thread I don't think he can post his prices. That might cause an uproar with the others(scooter oriented businesses) on this site.
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Post by causticbelt on Jun 30, 2009 8:14:18 GMT -5
i would love to see the difference in port sizes between your stage two and a stock head.
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Post by causticbelt on Jul 1, 2009 19:07:03 GMT -5
what are the valve sizes? just wondering how big they are.
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Post by headman on Jul 3, 2009 4:14:18 GMT -5
"kliff", The stock valve train components are regular replacement components offered by BladePowersports, that is who I bought them from. I have logged over 3k miles on my scooter using these heads, no problem. I have also tortured my kiddos mini-buggies and not problem one (over 200 hours). We weren't sure what type of demand there would be for alternate parts but we needed Over sized valves for the stage III so I looked into stainless steel while I was at it. -The stainless steel valve option offered for the stage I, II and II+ are very good quality and are by NCY RACING (an additional new option for these heads are the Farrea also but at the $125 price). -The over sized stainless steel valves for the stage III are made by Farrea. "indy50", -I understand if anyone isn't comfortable with our prices or is reluctant to put down the dough but I still appreciate you taking the time to ask. -Please clear the air regarding any claims made by me regarding a 90mph anything. These heads make great power but my claims are all in black in white on this thread. I apologies to everyone who has expressed interest that I haven't addressed yet  , I will get to you. Thanks for all the interest and I look forward to helping you tune your system with a new fully optimized power plant. ;D |
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Post by moot on Jul 3, 2009 7:15:37 GMT -5
So, what's the prices? And can we see some pics of the bits you've tweaked with?
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, I will get to you. Thanks for all the interest and I look forward to helping you tune your system with a new fully optimized power plant. ;D