[Bmcu] TR3 compression test

[Jeremiah Curry]

Thanks for everyone who responded to my e-mail below.  I ended up buying a
new gear reduction starter and when testing with the starter, the
compresssion rate definitely went up.  Now I am worried it may be too high.
Here are the results front to back:
140 psi
130 psi
155 psi
145 psi

I think since the head was shaved by the previous owner and then I had it
rebuilt, I have a much smaller compression chamber.  Is this too much over
the expected 120 psi that I should be worried?  Or is the 25 psi differnce
worrisome?

Thanks,
Jeremiah

-----Original Message-----
From: vtr-bounces+jercurry=comcast.net at autox.team.net
[mailto:vtr-bounces+jercurry=comcast.net at autox.team.net] On Behalf Of
Jeremiah Curry
Sent: Tuesday, January 22, 2008 11:35 PM
To: vtr at autox.team.net
Subject: [VTR] TR3 compression test


howdy all,

I just put the head back on my TR3 the other day and wanted to make sure I
did everything right, and that the parts were all good.  We did a leak down
test and 2 of the cylinders where "yellow" and two were "green".  To be
doubly sure, I borrowed a compression tester from autozone and did that
test.  My starter has decided not to cooperate since then, so I had to turn
the engine over with the hand-crank.  Due the manual nature, I only went
through about 2-3 compression cycles, but the PSI rating for the cylenders
were from 30-60 psi.  I understand I should be looking for 120 psi.  Is this
an indication that something is horribly wrong?

to test the tester, we put it on my brother's 5.2L jeep v8 and it got 85
psi, that seemed a little low too.  Any insight would be appreciated.

thanks,
Jeremiah

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