3.0 Liter CIS for PMO trade anyone?

[opticalfuel]

Who would be interested in a trade of a CIS (complete) system that comes with 3.0 Liter SC engine?

I am trying to see if I can interest anyone in trading my CIS intake system for a pair of PMO's or a good set up like that. I have a 74 RSR (read: smog exempt) I am building up, and have a few months to decide if I want to go for the big power, or just keep it as-is.

If anyone has a need for the CIS, it is complete and I'll be posting pictures shortly. I have completely gone through it and made sure it's all good.

Anyone?

Questions? Comments? Offers?

If I don't get any takers... I'll just use it with 964 CAMS and go with it.

[jpnovak]

Considering the going rate for a CIS system is about $400 and the going rate for a PMO setup is nearly $3k, I think you might have a hard time finding someone to trade with.

btw, nice looking 74 project.

[opticalfuel]

Yea. I bet that would be a hard sell. I am obviously way off base.

I guess I'll just stay with the CIS. I wasn't sure what the CIS was worth.
Thanks for the heads up, and the compliment.

No PMO's for me... at least not anytime soon.

[opticalfuel]

by the way....

If I know the motor I have is CIS, has stock everything from a 1980 SC... what compression do you think these pistons are that I have pictured in the photo gallery (and below) 8.5:1 or 9.8:1 as is listed on page 113 (top) of Wayne's 911 book?



Markings inside:

[opticalfuel]

Do you think you can identify which piston those are? 8.5:1 or are they 9.8:1 ??

[Vin-barrett]

Those are 9.8:1 CIS pistons like the ones in a euro 3.0 930/10 engine

[opticalfuel]

I believe the pistons are 8.5:1. I wish they were 9.8:1, but according to the stamp on the case: 930/09 and the book Wayne's book on "How to build and modify..." on page 202... halfway down... clearly shows that the pistons that come in that engine... 930/09 are 8.5:1 - producing 188 HP @ 5500, and 265 n/lbs of torque @ 4200 max.

I think I will have to locate a match set of 9.8:1 pistons and cylinders if I want to get the most out of the 964 cam grinds.

Bad news for me, good news for anyone needing to sell a set.

KNOW anyone looking to sell a set?

Thanks!

[Vin-barrett]

Yes I agree with you that they don't go in the 1980 engine but maybe this motor was rebuilt before with 9.8's?
Heres some pics I used when I was IDing pistons when i built mine. I went from the Alusil 9.3's to Mahle 9.8's

Maybe others will chime in on what you have there

[euro911sc]

Perhaps not 9.8's. You pocket is too ill defined and the number is wrong. My '82 Euro had the following on the inside of the piston:

Markings:
95L70
++ (weight group)
C021

Yours do not match any of the 3 pics Vin has there either. My 9.8's look more like Vin's 9.5 Euros with the sharply defined flat area.



Best regards,

Michael

PS: Should move this question to Engine Rebuilding and out of Classifieds

[Vin-barrett]

Originally Posted by euro911sc

Yours do not match any of the 3 pics Vin has there either. My 9.8's look more like Vin's 9.5 Euros with the sharply defined flat area.

guys-
Sorry to make this even more confusing. That 9.5 was a typo, that is indeed a 9.8 piston like Mike suggests

[opticalfuel]

So I am still unsure, but it looks like the ones I have match the 9.5 or 9.8 closer than a 8.5....

Either way it looks like I am probably going to be happy with the ones I have. I am not going to miss that much HP if I stick with the current pistons. Looks like the motor had been worked on, if the 80 came with 8.5's

P.S. How do I move this question?

[opticalfuel]

The question is now under motor rebuilding...

8.5 or 9.8:1 Pistons?