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-   -   Compression check - w00t! (https://www.miataturbo.net/prefabbed-turbo-kits-3/compression-check-w00t-21613/)

jbresee 05-27-2008 09:06 PM

Compression check - w00t!
 
I replaced my crappy gauge with a decent model.

Compression looks like

196
196
197
206

All plugs look alike and are a healthy grey without soot, oil or wetness.

Sweet. I'm ordering my BEGI-S tomorrow!

I wish I had the funds to go full MS, but that will wait.

Jim

samnavy 05-27-2008 09:09 PM

Sweet, I think my first motor started out in the mid-150's across the board. Lasted 10k@12psi that little bitch did. Current motor has twice the mileage and twice the compression (figure that out)... you should do fine.

Big advice... as soon as you've gone MS, start buying internals as they pop up for sale.

mike_671 05-27-2008 10:17 PM

What are the stock numbers supossed to be?

Ps: killer avatar samenavy :)

jbresee 05-28-2008 07:58 AM


Originally Posted by mike_671 (Post 263090)
What are the stock numbers supossed to be?

Ps: killer avatar samenavy :)


I read 193 on the 1.6 as a the spec compression... can't remember where I saw that.
Jim

samnavy 05-28-2008 08:11 AM

That can't be right. My current motor has 260k miles on it and the number last month were 208/208/210/215.

jbresee 05-29-2008 02:58 PM

here's the post I saw on 1.6 spec numbers...
 
13th December 2007, 04:15 #4
Bill Strohm
Supporting Member

Join Date: May 2000
Location: Fountain Valley, CA
Posts: 12,550

The newly-manufactured engine spec is 192 psi, from my 1990 factory workshop manual. Those are very good numbers.
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wes65 05-29-2008 03:28 PM


Originally Posted by samnavy (Post 263225)
That can't be right. My current motor has 260k miles on it and the number last month were 208/208/210/215.

carbon build up? inaccurate gauge?

1stproject 06-01-2008 02:02 AM

My 1.6l has 137k on it and compression is 210/210/205/210

Savington 06-01-2008 02:45 AM

Carbon buildup.

I'm jealous. My numbers are 145-160, but my motor's been through hell. 15+psi, more detonation than I care to talk about.


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