Cylinder pressure

[juic3d]

What is everyone running cylinder pressure on a 10/1 compression

[FoxBodyNick]

I would assume 150-180 psi. cylinder pressure will be dependent on valve events.

[juic3d]

Do you have to run lower compression with an f cam

[shumpertdavid]

He means that a cam with a lot of overlap will give lower compression readings than a cam with low or no overlap

[juic3d]

Well I just did a cylinder compression test and all cylinders are reading 80 psi

[dville_gt]

Well I just did a cylinder compression test and all cylinders are reading 80 psi

do a leak down test.

[shumpertdavid]

Or confirm with a different gauge

[juic3d]

I did different guage and bumped it like 20 times the most I could get out of it was 80 psi. Car is still pooping out of the intake but when clears up runs like a beast. Not like a dead motor like the test are showing. I also did a vacuum test and was at 7 psi at idle

[FoxBodyNick]

I would assume the fcam would give ya 14 to 15 psi with healthy motor.

[shumpertdavid]

You cranked the motor over until the gauge quit climbing and only got 80 psi each time?

[shumpertdavid]

It's not psi on vacuum side, its measured in inches of vacuum

[FoxBodyNick]

It's not psi on vacuum side, its measured in inches of vacuum

Thats what happens when your drunk and on your phone. Lol dont call me out! I was in the realm of atmospheric pressure

[shumpertdavid]

Thats what happens when your drunk and on your phone. Lol dont call me out! I was in the realm of atmospheric pressure

Lmao

[juic3d]

Yes I cracked it over 20 times and the most I could get was 90

[slow84lx]

Timing chain jump a tooth?