Thread: Couple of VE+det Q's

I should also say that the regular VE cams will likely work better with mid-frame turbos. the sr16 cams have a lot more overlap and won't come alive until running a rather large turbo.

Hmmm still iffy about using these studs but if your using these I guess ill trust it . On the cam issue should'nt I be able to dial out some overlap with the cam gears ? Or just stick some sr20ve stock cams in and call it a day ? .

stick with stock cams and call it a day. the SR16 cams have way to much overlap to dial out with cam gears. 70* worth of overlap. the SR20ve cams only have 48*.

I have a set of SR20VE cams .....I am sure a few people do...I would take those 16VE cams off your hand possibly

I got my sr16ve head back from the mechine shop for a quick shave . Now i'm concerned that the compression will be bumped up too much. Now how much per thousands milled off does the compression go up ? And now people are telling me that a VE head on a det block will bring comp up to 9.1 sorta like a real ve-t I'm getting two different awnsers ? Also placed the head on and checked the arp studs and walla they do bottom out and have plenty of threads for the nuts if i use the old ve head bolt washers ! Thats a load off my back .So now the motor is 90% complete and tapped for the vvl oil feed . Now with the only issue being the oil filter housing clearing the intake manifold . Now im not real smart with bore and displacement numbers but using the 86mm stroke and 87mm bore will bump it to just under 2.1L ? I.m trying to get the numbers figured out as my Jk ecu is tuned for 8.5.1 comp . Thanks again

i think the compression gets 8.7.1 with the ve head nothing major. Alot of guys just stick with a 8.5.1 det tuned ecu. You should be find. SR16-SR20ve head is the same just cams makes a difference. Notch the pistons and you can use the sr16 cams

Yea still hear diff comp ratios though . I am running sr20ve cams so no need to notch the pistons . But when i get bored with the gt28rs and go bigger I'll swap the sr16 cams and notch the pistons. .

If you are running a DET and a VE head, your compression will be 9.3:1. The amount taken off during a basic resurface is pretty negligible on the CR of the engine. Prob no more than .1CR unless shaved a lot.

If you have GTiR bottom end, the compression ratio is still 9.3:1 with the VE head. The GTiR has different compression numbers than the DET because of the head chamber design.

Yea they took next to nothing off The head as it was fairly straight . Ok so 9.3.1 ill have to retune for the comp ratio . And it's bluebird block wich still put it at 9.3.1 . Thanks .

I believe all JWT does between comp ratios is add/remove timing. I'd bet you'd be pretty safe with current tune, taking out 2* throughout the map.