7mge high compression pistons pics
- Thread starter suprarich
- Start date
tissimo;1465749 said:
These are just a one off deal that is installed in a built 7mge. It will run pump gas. The cam overlap is venting some of the psi out.
Clip;1465763 said:
If your 20 some year old injectors are up to the task you shouldn't. The stock injectors will flow enough fuel for most street NA motors.
Here are my Cosworth 12.5:1 pistons.
Weight: 327 grams
Unfortunately they are no longer produced by Cosworth.:nono:
So if I ever want to replace one, I am screwed.
Weight: 327 grams
Unfortunately they are no longer produced by Cosworth.:nono:
So if I ever want to replace one, I am screwed.
Last edited:
Rich,
Are you going to machine the head where the 2 little nubs stick down between the valves,
or are you going to cut the piston back in that area?
Are you going to machine the head where the 2 little nubs stick down between the valves,
or are you going to cut the piston back in that area?
gofastgeorge;1465853 said:Here are my Cosworth 12.5:1 pistons.
Weight: 327 grams
Unfortunately they are no longer produced by Cosworth.:nono:
So if I ever want to replace one, I am screwed.
They look nice! If you still have the job sheet they could be really easy to re-produce. If not, then a good going over with the mics would find enough measurements to reproduce.
AJ'S 88NA;1465872 said:Geez Rich...first the billet cams and now this....I have to be careful about drooling so much, going to ruin my laptop
I'm not even close to being done yet! Stay tuned! Check out this other stuff.
http://www.sipracingmailorder.com/servlet/the-SIP-Racing-Products/Categories
gofastgeorge;1465924 said:
Actually there is no interference right there with these pistons. The set pictured is already in a running motor and nothing had to be machined. The dome does not protrude on these. The center dome of the piston is even with area above the rings. The valve pockets and outer edge are based on oem type CP turbo pistons with just a modified dish.
No job sheet, since I bought them from someone, who bought them from someone........
But I was thinking of sending one off to Wiseco to get them duplicated.
Their 10.5:1 pistons are fine with stock or 256 cams,
but just too low of compression for big cams.
By the way, these will also hit the protrusions in the stock head.
But I cut those out of my heads to unshroud the valaves.
But I was thinking of sending one off to Wiseco to get them duplicated.
Their 10.5:1 pistons are fine with stock or 256 cams,
but just too low of compression for big cams.
By the way, these will also hit the protrusions in the stock head.
But I cut those out of my heads to unshroud the valaves.
Damn eyes..........
I thought the CPs were raised by looking at your first picture.
Never mind.............
I thought the CPs were raised by looking at your first picture.
Never mind.............
suprarich;1466102 said:
Or we look at the sun too much, wondering if that damn ting will ever go down....