:driving: Turbo Boost Gauge readings

***TitaniumTT*** · 09-27-2009, 09:19 AM

you have an engine that produces 85 psi of compression. That is below what Mazda considers the minimum for a running engine to produce. It's no wonder that your engine hunts, idles poorly, and pulls lower than average vacuum. It's becuase the engine is old and tired or improperly rebuilt. My ported RE makes 120-125psi of comp on all 6 faces and pulls ~15" vac at a 750rpm idle and it hunts a little. I bumped the idle to 1000 rpms and she'll pull 19" of vac all day and not hunt around much at all.

I think you're chasing a problem that doesn't exist. How did you run your comp test?

By the way, I noticed that you said you're adjusting things per the gsl-se FSM. That is WRONG! You need to adjust things per the FSM that the engine belongs to. If the motor came from a 86-86 TII car, that's the FSM that you need to be looking at for adjustment.

nvno1 · 10-13-2009, 10:43 AM

Quote:

Originally Posted by TitaniumTT

you have an engine that produces 85 psi of compression. That is below what Mazda considers the minimum for a running engine to produce. It's no wonder that your engine hunts, idles poorly, and pulls lower than average vacuum. It's becuase the engine is old and tired or improperly rebuilt. My ported RE makes 120-125psi of comp on all 6 faces and pulls ~15" vac at a 750rpm idle and it hunts a little. I bumped the idle to 1000 rpms and she'll pull 19" of vac all day and not hunt around much at all.

I think you're chasing a problem that doesn't exist. How did you run your comp test?

By the way, I noticed that you said you're adjusting things per the gsl-se FSM. That is WRONG! You need to adjust things per the FSM that the engine belongs to. If the motor came from a 86-86 TII car, that's the FSM that you need to be looking at for adjustment.

must be nice to have a freshly built motor...i miss those days (except the break in part

)..the way i tested the compression was with a reg compression tester with the valve taken out and cold. i got 3even pulses. A friend of mines who builds motors told me the compression is okay , not great but okay. you noticed i was adjusting things per GSLSE FSM? where did to get that? i have the 86-88 FSM on hand.

09-27-2009, 09:19 AM	#1
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son Posts: 4,581 Rep Power: 10	you have an engine that produces 85 psi of compression. That is below what Mazda considers the minimum for a running engine to produce. It's no wonder that your engine hunts, idles poorly, and pulls lower than average vacuum. It's becuase the engine is old and tired or improperly rebuilt. My ported RE makes 120-125psi of comp on all 6 faces and pulls ~15" vac at a 750rpm idle and it hunts a little. I bumped the idle to 1000 rpms and she'll pull 19" of vac all day and not hunt around much at all. I think you're chasing a problem that doesn't exist. How did you run your comp test? By the way, I noticed that you said you're adjusting things per the gsl-se FSM. That is WRONG! You need to adjust things per the FSM that the engine belongs to. If the motor came from a 86-86 TII car, that's the FSM that you need to be looking at for adjustment. __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**