7age 20v Dyno numbers are in

[jondee86]

Erm.... I think you got a spot of blood on your logo...

Cheers... jondee86

[oldeskewltoy]

Erm.... I think you got a spot of blood on your logo...

Cheers... jondee86

[BattleGarage_RS]

Hey guys, based on the fuel table you can see it is running out of breath way sooner than it should. With ma 7A 20V with Kelford 194-B's, large header, and some porting I'm adding the most fuel at the higher RPM range.

What is the exhaust set up?

[BattleGarage_RS]

I should mention power is very good on my engine!

[v33sonata]

Hey guys, based on the fuel table you can see it is running out of breath way sooner than it should. With ma 7A 20V with Kelford 194-B's, large header, and some porting I'm adding the most fuel at the higher RPM range.

What is the exhaust set up?

Hey I've shot you a couple emails but no response. I'm using a OBX header, no cat and an RSR exhaust 2.5inch

[BattleGarage_RS]

Hey, can you re-send? I might have missed them if we were particularly busy! Or, maybe they didn't even go through..

[SgtRauksauff]

my gut says it's cam profile and timing. when I built my 16v, with stock cams, there was the typical dropoff after about 6700 rpm or so. when i put on the Toda cams with longer duration, the whole curve moved up, but the drop in torque was less pronounced. I agree that with a 12% increase in cylinder volume, duration and overlap of the cams can have a more significant effect.

I don't really know a lot about the VVT system and exactly what it does, but it looks like it just advances or retards the intake cam, so you're changing your overlap between exhaust and intake cycles, and starting the intake event a little sooner or later. duration and lift of the valve opening will remain the same, so it could be reaching the limit of air that it can move into the system.

The VVT solenoid works based on RPM, and allows oil flow to the VVT cam gear, correct? Do you maintain the same oil pressure at the higher rpms, or does it drop, maybe causing the overlap to increase, reducing the volume of air/fuel mix in the combustion cycle?

[SR85DET]

you need to confirm TDC before you do anything else.....

already did twice and had someone else check it out.

I think what you might not be understanding is that the timing marks, although all lined up according to the marks on the backing plate and the stock timing gears, might not actually be degreed in properly at all.

You need to used a degree wheel and piston stop like suggested in order to degree cams if any of the following conditions are true: the head gasket thickness is changed, the head has been shaved, the cams are aftermarket (even these may not be degreed properly using factory marks on an otherwise factory engine thus why they give you a spec card when you buy cams) adjustable cam gears, or A TALLER (or shorter/shaved) BLOCK.

The geometry changes when you build a 7AGE with the taller block but your cam timing marks don't know this. Only a degree wheel will tell you what you need to know. This could cause major power losses.

[Ultimx]

I'm guessing the shims on the cams are correct also right?