i have a b18c5 with 9.1 wiseco flat top pistons eagle rods bored .20 over here are the results. Do these numbers sound low?

1.175
2.175
3.169
4.175

tell me what you guys think should i rebuild or keep boosting it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxvtecturbo &raquo;</TD></TR><TR><TD CLASS="quote"> i have a b18c5 with 9.1 wiseco flat top pistons eagle rods bored .20 over here are the results. Do these numbers sound low?

1. 175
2. 175
3. 169
4. 175

tell me what you guys think should i rebuild or keep boosting it </TD></TR></TABLE>

Umm, what units are those compression numbers in? Certainly not PSI...

Oh, jesus, I get it now. You need a space in between the numbers. They are all consistent, that's the good news. Those numbers are fine for a 9:1 compression motor. 10.5 to one would be around 200+ depending on whose gauge you use.

-Chris

[E] I'm running my motor at 170-220 compression. Burning a quart every 1000 miles. *shrug* I should check my numbers again, haven't looked at 'em in a while.

 

While on this topic,
Anyone know where i can get a larger pressure gauge for my compression tester?
I maxed out at 300 on all cylinders. Kinda curious on the real numbers

 

what the hell is your setup?

 

Consistency is key always...

....and your not too far off except for what looks like that 3rd cylinder!

 

Without doing the math, they look like they are with in the 15% rule ...

 

oh god your engine is fucked.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mikestypeRR &raquo;</TD></TR><TR><TD CLASS="quote">oh god your engine is fucked. </TD></TR></TABLE>

I hope you were JOKING!
... since this is on a 9:1 turbo motor.

The numbers seem appropriate given the application.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mikestypeRR &raquo;</TD></TR><TR><TD CLASS="quote">oh god your engine is fucked. </TD></TR></TABLE>

Reading comprehension ownz j00.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mugen Mike &raquo;</TD></TR><TR><TD CLASS="quote">

Reading comprehension ownz j00.</TD></TR></TABLE>

er'yup

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BDBGoalie1982 &raquo;</TD></TR><TR><TD CLASS="quote">While on this topic,
Anyone know where i can get a larger pressure gauge for my compression tester?
I maxed out at 300 on all cylinders. Kinda curious on the real numbers</TD></TR></TABLE>
use one designed for a diesel motor.
since diesels have very high compression.

 

those numbers look close enough to me. LIke Bbasso said, they are in the rule of 15

 

ttt

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxvtecturbo &raquo;</TD></TR><TR><TD CLASS="quote">ttt</TD></TR></TABLE>

why are you bumping this? that compression is perfect, you already got your answer numerous times.

 

i never told my compression results that was a example i am just trying to get as many opinions as i can if that is allright with you

 

Sean, have you done a compression test on your motor?
Otherwise ... this is all pretty much pointless.

 

yes i have and i have been told by people that it should be 200 and above and mine are not that high but some of you guys say i should be fine mine is
175,175,169,175. Can i use engine restore to bring that one cylinder up?

 

:shakeshead: and walks away in disbelief...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxvtecturbo &raquo;</TD></TR><TR><TD CLASS="quote">yes i have and i have been told by people that it should be 200 and above and mine are not that high but some of you guys say i should be fine mine is
175,175,169,175. Can i use engine restore to bring that one cylinder up?</TD></TR></TABLE>

Those numbers are great for 9:1 compression. Don't touch it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crxvtecturbo &raquo;</TD></TR><TR><TD CLASS="quote">just trying to get as many opinions as i can if that is allright with you</TD></TR></TABLE>

okie then. rebuild your motor. happy?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bbasso &raquo;</TD></TR><TR><TD CLASS="quote">:shakeshead: and walks away in disbelief...</TD></TR></TABLE>


i'm with you on this one rob

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rodney &raquo;</TD></TR><TR><TD CLASS="quote">i'm with you on this one rob </TD></TR></TABLE>


p.s. crxvtecturbo: If you reply something st00pid to Rodney, he's gonna go off on you. I think he's in one of his 'moods'. hehehe

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris F &raquo;</TD></TR><TR><TD CLASS="quote">p.s. crxvtecturbo: If you reply something st00pid to Rodney, he's gonna go off on you. I think he's in one of his 'moods'. hehehe</TD></TR></TABLE>

tattle tale.....

 

i dont mean to be rude to you guys i just wanted as many opinions as possible you guys have been great help for me and now i feel better about this whole topic and can leave here happy 2 nite knowing that i dont have to rebuild it is just locals saying that my compression numbers are low

 

Wow, this topic flew.
Answering the question:
B18C Block - Fully balanced, micropolished crank, strenghtened and shopeened rods, CTR pistons, ARP rod bolts
B16A Head - ITR valves, valvesprings, retainers, guides, cams, ect - Milled .003

So i should be able to stick a nipple fitting on a diesel gauge, and use my existing compression tester right? I'm curious how high it will go.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zygspeed &raquo;</TD></TR><TR><TD CLASS="quote">

I hope you were JOKING!
... since this is on a 9:1 turbo motor.

The numbers seem appropriate given the application. </TD></TR></TABLE>

&lt;---mike who definatly feels like a noob.