Welcome to the SR20 Community Forum - The Dash.
SR20 forum logo

Thread: Going to dyno Wednesday. Any estimates on peak HP?

+ Reply To Thread
Posts: 141-145 of 145
2013-05-02 07:59:08
****MAY 2nd, 2013 update****

SR20VE head gasket swap is complete:

- I went with the thicker one from Greg normally used for VE turbo applications, but less likely to fail over time. This may have lowered power a bit, however this job was a huge pain in the arse, and I'd rather lose a few HP than do this again.
- The head was re-surfaced at a machine shop, it ended up being about 1/15 thousandth of an inch off.
- All new Nissan OEM head studs, no APR stuff. Too many horror stories
- They also cleaned and chased all the holes because one of the head studs failed
- Three angle valve job
- Port and polished head and all the goodies
- New VC gasket
- I also wired two new radiator fans directly to a switch inside the cabin, bypassing the ECU because of an apparent short.

Here are lots of before and after photos:

Head first pulled after gasket failed:


Cleaned up, new head gasket on:






SO.. I will be going to the very same dyno again this weekend. Previously, before the head gasket failed, the motor made 206hp @ 7920RPM and 148 ft-lbs of torque.

Any guestimates of what it could make now? It was a pretty thorough port and polish, and driving it now after the break in period, I certainly feel a difference up high, not a huge amount, but some. I'm wondering if the thicker head gasket may have kinda offset the port and polish, who knows. I stuck with the original intake manifold although I briefly considered purchasing the kit from Greg, but it was too expensive and would have put the project over what I wanted to spend.

With everything back together, just before the valve cover was put back on. Really clean motor, no sludge. I run only Mobil-1 synthetic (I know some of you don't like that but its worked for me)


All in all, it took about a month of working on it here and there, when the weather cooperated (it even snowed a few times).
Here she is now, looking and running good from yesterday:

Last edited by Storm88000 on 2013-05-02 at 08-44-41.
2013-05-02 13:41:09
2013-05-02 14:16:59
I must have missed it what were the flow numbers before and after the head port?
2013-05-02 23:46:53
Originally Posted by BlueRB240
I must have missed it what were the flow numbers before and after the head port?

I have it written down somewhere in my trunk, ill find it and reply
2013-05-09 07:58:46
So what numbers did it pull this time??
+ Reply To Thread
  • [Type to search users.]
  • Quick Reply
    Thread Information
    There are currently ? users browsing this thread. (? members & ? guests)

    Back to top