How much compression does your 350X have? [Archive]

Lots_Of_Nothing

04-12-2005, 09:27 PM

I know stock is 178, I'm just wondering what everyone is running? And when is it time to rebuild? I know mine came in at about 140-145, But the thing runs great, and it still kicks over like a mule, And doesnt smoke.

350x'inNY

04-12-2005, 10:09 PM

I just found my old broken kickstarter to turn my crate motor over once and awhile.... wow.... talk about compression! I thought it was siezed at first! Since it's still crated, and the kickstart knuckle is broke, I have to push it over by hand. It made some nice sounds!!! :beer I'll test the compression on it if you are interested.

Bruce

Lots_Of_Nothing

04-12-2005, 10:22 PM

I'm just interested in if I should be worried with 140psi of compression?, for being so much lower then stock, I sure as hell hate the thought of kicking over a stock one with 178psi of compression while going through the tuning phase.

Although, I am interested to know what the stock compression really is. Just to sort of see how correct honda was.

BIGCRIP28

04-13-2005, 08:33 AM

i wanted to do mine but i dont have the right end for my gauge.

Liquid-Darkness

10-17-2007, 03:11 PM

I'm just interested in if I should be worried with 140psi of compression?, for being so much lower then stock, I sure as hell hate the thought of kicking over a stock one with 178psi of compression while going through the tuning phase.

Although, I am interested to know what the stock compression really is. Just to sort of see how correct honda was.

I just did a compression test on my stock 86 350x engine, warmed up engine with the throttle wide open. I am also running 140psi. A longer kick start lever would make starting it easyer.

ceaserthethird

10-17-2007, 05:23 PM

Aren't you supposed to have the Choke On ? ? ?

sandpuppi101

10-17-2007, 07:19 PM

I've had a smoker motor running with about 90 psi before ,and had one that I put together a couple month's ago in the 200 range,and it was a bear to kick over at that.If your in the 140-160 range and it runs fine,I would go with that,but when you start running them at lower compression's,you can cause damage.

RacerRichie

10-17-2007, 08:21 PM

When it stops running and you can kick it over with your hand its time for a rebuild. My X ran till the very end. Now its rebuild time!

Liquid-Darkness

10-17-2007, 08:39 PM

Aren't you supposed to have the Choke On ? ? ?

Its the throttle wide open. :wondering I am gunna run my topend till its smoking. Then bore it .040 over with a 12:1. Its gon b sweet.

Liquid-Darkness

10-17-2007, 08:52 PM

I've had a smoker motor running with about 90 psi before ,and had one that I put together a couple month's ago in the 200 range,and it was a bear to kick over at that.If your in the 140-160 range and it runs fine,I would go with that,but when you start running them at lower compression's,you can cause damage.

What kind of damage sandpuppi101?