Compression Test

[NSS Guy]

I did a compression test today, motor has about 140 passes since freshening up. Flat top pistons and indy little easy heads. 499ci. Any comments?

 

[NSS Guy]

272/276 @.050 cam. Picture looked blurry, it was showing 215psi

 

[Bee1971]

Comment - It reads 210



If the other seven are 210 , I would say it probably runs pretty damn good and your happy

What cam ?



My little 383/432 is at 200 dead nuts on all eight this spring

And that was cold with the throttle plates closed , air cleaner off

Honestly I was a little surprised with those numbers recently after I rebuilt it a few years back

I would have thought 160/180 max

I just picked up another new gauge at Iola WI to confirm my confirmation that those numbers are confirmed

LOL

 

[Bee1971]

I was typing while you where reading my mind

 

[NSS Guy]

All cylinders were above 200, runs 10teens with that crappie max wedge intake thru the mufflers

 

[33 IMP]

Sounds like LOTS of static compression ratio!
Agree on the max intake. They are pretty and cool and all, but no longer the fast way from a to b. I had a welded up tm7with an 850, swapped to a crossram with two 750 carters and picked up..... nothing.

 

[silversedan]

looks good Jim. hope you're doing well!!

 

[dvw]

That's higher than mine at 15-1, lol. Look forward to racing you at MM.
Doug

 

[NSS Guy]

That's higher than mine at 15-1, lol. Look forward to racing you at MM.
Doug

I've got a diesel. lol.
The few times I have actually ran it open headers, it has a nasty sound. Lots of pop.
See you in a few weeks.

 

[NSS Guy]

looks good Jim. hope you're doing well!!

Thanks Russ, I am all healed up from my fall. It took awhile but doing great, thanks for asking. Hope to see you at NMCA Indy