1600ti pistons

[pkbinplano]

so I guess the data sheet Mahle sent me is correct. These are 1800ti pistons.

081 88 BMW.pdf

[jimk]

My shelf set is std bore Klobenschmidt bathtubs but not extradordinarily high compression 8.3:1. I got these new on a closeout and ran them for about 500 miles while I was building my E12 head engine that used the piano tops.

[FB73tii]

Interesting, Why would someone do this to these pistons ? They actually look like the 8.6/1CR 1600 pistons, but with cut-out valve reliefs. Their dome height suggests they are 1600 8.6CR pistons. Someone must have used a radically profiled cam and cut out the reliefs to compensate for the long duration on a high performance cam.

Stroke is 71mm so mine are 1600 pistons. Engine history unknown, but it is likely the block used when the car was raced in SCCA GT3/4 from 1980-1990. Notes from the original owner say they used a modified Kawasaki cam at some point. I don't have any details on that cam and whether it was from a motorcycle or not. The engine came to me with a 121ti head and mild Norris model 301 cam. No porting was done so I suspect it may not be the original head. (As I read the 1980 GCR and supplementals for 1980, the engine was free in SCCA GT2/3/4 except for displacement, though I could be wrong.)

Will be interested if anyone has a known piston with the same markings as mine.

--Fred '74tii and '69GT3

[Slavs]

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Edited August 9, 2021 by Slavs

[Slavs]

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[danco_]

This site claims to have 1600ti pistons in stock, and for a very good price. They offer three oversized pistons, as well as standard size pistons.

http://www.oldtimer-motorenteile.com/product_info.php?language=en&info=p2428_piston-bmw-1600-ti--67---68.html&

 

 

I'll purchase a set and compare with stock 1600 pistons.  

[G-P]

On 1/14/2016 at 6:35 PM, danco_ said:

This site claims to have 1600ti pistons in stock, and for a very good price. They offer three oversized pistons, as well as standard size pistons.

http://www.oldtimer-motorenteile.com/product_info.php?language=en&info=p2428_piston-bmw-1600-ti--67---68.html&

 

 

I'll purchase a set and compare with stock 1600 pistons.  

 

I know I'm reviving an old thread (for the second time), but did you end up buying these pistons? I'm planning my rebuild and I'd like a set of these in the near future...

Edited April 16, 2021 by G-P

[Slavs]

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Edited August 9, 2021 by Slavs

[Son of Marty]

What are the holes by the piston pin for?

[Slavs]

22 hours ago, Son of Marty said:

What are the holes by the piston pin for?

Could be for venting ?