Enviromoto
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|  | Endrigo GY6 Performance Heads
« Thread Started on Mar 7, 2011, 3:17pm » | |
Endrigo GY6 Performance Heads now available at Enviromoto.
As you know your stock head from the factory has it's flaws. The porting is terrible, the valves are poorly seated, the intake port is rough, and overall its just a very restrictive piece of equipment. Dave Endrigo has taken this into account and spent the better part of a year with Enviromoto to develop a quality performance product that keeps your engine reliable, and is cost effective.
Bolt on horsepower!
Stage 1+ $189.99
![[image]](http://i251.photobucket.com/albums/gg288/Enviromoto/Stage1.jpg "[image]")
Endrigo Racing Stage 1+ Specs:
Ported intake runner gives 7% gain over stock
Performance 3-angle valve job
Decked .20" Giving you 1 point of compression over stock
Ported Intake
Port matched intake spacer
Re-machined head gasket surface
Stage 2+ $269.99
![[image]](http://i251.photobucket.com/albums/gg288/Enviromoto/Stage2.jpg "[image]")
Endrigo Racing Stage 2+ Specs:
Ported intake runner gives 13% gain over stock
Ported exhaust runner give 5% gain over stock
Performance 3-angle valve job
Decked .20" Giving you 1 point of compression over stock
Ported Intake
Port matched intake spacer
Re-machined head gasket surface
Recommended accessories.
UNI Free Flow Airfilter
Performance Exhaust
NCY Performance Cam
NGK Iridium Sparkplug
59mm Big Bore Kit
As with all performance engine upgrades carburetor tuning will be required.
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10% Member Discount Code "Scootdawg"![[image]](http://i806.photobucket.com/albums/yy341/NASRA2009/SignatureEnviormmoto.jpg "[image]") |
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tortoise
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| | Re: Endrigo GY6 Performance Heads
« Reply #1 on Mar 7, 2011, 4:26pm » | |
Mar 7, 2011, 3:17pm, Enviromoto wrote:| Decked .20" Giving you 1 point of compression over stock |
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What is the combustion chamber cc volume . . to calculate BBK compression ratios?
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medman1952
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| | Re: Endrigo GY6 Performance Heads
« Reply #2 on Mar 7, 2011, 11:38pm » | |
are these for 139qmb or 157qmj?
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Enviromoto
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| | Re: Endrigo GY6 Performance Heads
« Reply #3 on Mar 8, 2011, 1:36am » | |
157QMJ and T I'll have a answer for you shortly.
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microgirl69
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| | Re: Endrigo GY6 Performance Heads
« Reply #4 on Mar 8, 2011, 6:24pm » | |
thats ok and all but if im not mistaken scrappydog has a true big valve head'hand machined by cathers he's well known from his micro sprint performance on the east coast.plus nobody can beat scrappydogs price.just my 2cents is all. ;D
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Enviromoto
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| | Re: Endrigo GY6 Performance Heads
« Reply #5 on Mar 8, 2011, 7:29pm » | |
I checked Scrappy and he does have a head with large valves and hand ported intake and exhaust runners. However just because you have large valves and huge intake and exhaust ports dont mean your going to make any more power than stock. It has more to do with the flow, air velocity, and combustion chamber volume than anything else. Not only that but I didn't see anywhere where he had his heads decked to raise the compression.
Dave Endrigo actually has a flow bench to measure the increase in performance on his heads, and we found that larger valves and intake runners can also cause you to loose performance. So keep that in mind when you are looking for performance parts. Just because they say its performance don't necessarily mean its true.
We have tested these heads and will hopefully get some dyno numbers of our own soon to back up our claims. I hope scrappy does the same because I would love to compare notes.
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Enviromoto
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| | Re: Endrigo GY6 Performance Heads
« Reply #6 on Mar 23, 2011, 4:50pm » | |
Mar 7, 2011, 4:26pm, tortoise wrote:
Mar 7, 2011, 3:17pm, Enviromoto wrote:| Decked .20" Giving you 1 point of compression over stock |
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What is the combustion chamber cc volume . . to calculate BBK compression ratios? |
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Stock head 15cc
Endrigo shaved head 14cc
Stock motor 9.6:1
W/ Endrigo head 10.8:1
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Enviromoto
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Posts: 2,657
Location: Indianapolis,IN.
| | Re: Endrigo GY6 Performance Heads
« Reply #7 on Mar 31, 2011, 3:14pm » | |
In stock and ready to ship
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