SR20DET, barely any vacuum at idle

[yitzac1990]

For some reason I have only been getting around 3 to 4 in. hg. for vacuum at idle. no idea why. no boost or vac leaks that I can find anywhere. Its a FULLY built redtop, with Tomei solid head setup and 270 cams. Is it supposed to be that low with the solid head setup??

Also, when the engine is cold, I have to sit in the car and keep revving it for almost 10 minutes until it gets to running temperature or else it wont idle on its own. I think this may have to do with the vacuum problem. Any ideas?

Is this just how a fully built redtop SR is supposed to act?

Thanks!

[e1_griego]

Sounds like it's not timed correctly.

[RalliartRsX]

Sounds like it's not timed correctly.

x2...........

[yitzac1990]

would the timing affect the cold starting of the engine as well? Because when the car warms up it runs great, does really well. Would this be a CAS timing thing, or a tune timing thing? the CAS is 100% installed in the head correctly.

[KoukiMonsta]

Mechanical timing...

as in chain on cams is wrong

[e1_griego]

^That.

Yes, mechanical timing being off will mess with everything.