
Are the Evo Pistons 8 or 9 compression?
Research says it's higher compression on the EVO but with the deck height in a 6 bolt setup it come out about the same 7.8 or 8:1 3) If these are Graveyard pistons, the website says the rings are different between 8 and 9? Hasting lists one ring set for both. Does anyone have the dimensional data to see if these pistons are 8 or 9.
What is a high compression piston?
Most high compression pistons will come with valve relief's allowing the use of high lift cams. This JE domed piston raises the compression in a stock combustion chamber to 10.5:1. JE and Wiseco both make high compression pistons for H-D engines that do not require machine work on the heads.
What is the compression ratio of a Harley-Davidson engine?
This will give the engine a mechanical compression ratio of almost 9.5:1. This is considered the minimum compression ratio needed to make serious power from a Harley-Davidson engine. Mill Heads
What is a Je domed compression piston?
Most high compression pistons will come with valve relief's allowing the use of high lift cams. This JE domed piston raises the compression in a stock combustion chamber to 10.5:1.

What is good compression for evo9?
From research and speaking with Auto Torque, they suggested the compression should be reading around 12.5 Bar / 181 PSI.
How much HP can a stock Evo 9 handle?
Many running from 350 to 450 on the stock IX motor here in the UK.
How much power can a stock Evo handle?
There are 600+ whp daily driven Evos with the GT35R. You can get 350whp on 93oct out of the stock engine/turbo with just cams as the biggest mod. 400whp on the stock engine/turbo w/alky injection. 450whp on the stock engine/turbo w/alky and C16.
How do you do a compression test on a Evo?
2:146:21How To: Compression Test Evo - Voltex Evo Build #4 - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd once the spark plug is out all you have to do is install the compression tester. Drop that inMoreAnd once the spark plug is out all you have to do is install the compression tester. Drop that in there. Screw it in. And you want to start the car.
How much power can a 4G63 handle stock?
Premium Member. in most cases the evo's stock motor can handle 450-500whp.
How much HP can a 4G63 hold?
How Much Power Can A 7 Bolt 4g63 Handle? The stock build of a 4g63 engine can hold 400-500 horsepower.
How fast is a 500hp Evo?
Evo2, 12.1 113 mph.
How much power can a stock Evo 9 turbo make?
With proper tuning you can hit near 400 hp on the IX turbo. I was making about 380 hp @ 25 psi WITHOUT alky.
Which Evo engine is the best?
The best evolution has to be the Evo 8. It combines the redesign following the sixth generation with the power and comfort of the new age. It may not measure up to cars within the last decade when it comes to luxury but it is above par within its series.