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| Project Genisis Lo Budget 3800SC (Page 32/42) |
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hercimer01
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AUG 11, 04:07 PM
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I'm not real sure of how to change those but I do want to learn.
For now i'm just doing some basic checks.
Here is my dry compression test.
110PSI highest * 15% = 16.5PSI
110 - 16.5 = 93.5 is lowest allowable compression.
This means they're all within 15% of each other, in other words. Good.
Unless they are all just low. Whats a good range?
 [This message has been edited by hercimer01 (edited 08-12-2013).]
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Lou6t4gto
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AUG 14, 01:11 AM
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Before I decided to rebuild mine , SC from 1997 Riviera I checked it. It had 175,000 Miles on it and had 150 psi all cylinders, Dry. At 95 ibs , it will just about fire. Any engine I have ever worked on, (been a few) you want between 150-175, low comp maybe 135, High compression engines (11-1) about 200.
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hercimer01
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AUG 14, 09:00 PM
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Doing it wet brought them all up 10 PSI each.
I ran into another mechanic and he said the same thing you said.
What were your numbers after you rebuilt it?
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hercimer01
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AUG 16, 12:34 AM
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I put the car back together. When I did I found the Boost line from the intake manifold to the fuel pressure regulator and the MAP sensor had rotten fittings. So I deleted the BBV, and put all new rubber fittings on the line.
I think that took care of my ailments as far as my times go. The Boost line to the fuel pressure regulator was leaking. I assume that was causing fuel starvation. I can't wait to get it down to the track and try it again!
I'm still not convinced what the cylinder pressure test values should be.
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hercimer01
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AUG 17, 05:47 PM
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I was just trying to get into mid 13s. I almost made it to 12!
The boost line to the fuel pressure regulator and MAP sensor was loose!
While I was in there I also deleted the BBV.
 [This message has been edited by hercimer01 (edited 08-23-2013).]
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hercimer01
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AUG 17, 05:53 PM
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I also got a reply back from intense about the cylinder pressures. It looks like a rebuild down the road.
Allen,
Those numbers are very low; around 130 psi is acceptable but worn and perfect would be over 150 psi. They are, however, very even meaning there is no broken piston rings or blown gaskets etc. The rings are just very worn.
Thanks,
Chris
Chris; Technician, sales rep, & technology information.
INTENSE Racing
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hercimer01
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AUG 23, 04:52 PM
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GADJet
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AUG 26, 04:36 PM
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Ive got some Motegui FF7s on my 88gt. I like them but I think I am swapping back to my stockers...
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hercimer01
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AUG 27, 01:55 AM
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The Lady I bought the car from let her teenage son drive this Fiero. That is how the motor is blown at only 49,000 miles. He also bent a rim so it wobbles at 12 miles an hour and 70. I have to swap rims, I do like the lace wheels too.
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hercimer01
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JAN 09, 11:40 PM
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I won this today on EBay for 75 shipped!
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