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| Home > 998cc > K100 Small Bore - To Turbocharge or not? | |||||||
 25 Posts Member #: 2002 Member The Netherlands |
30th Jan, 2008 at 10:43:39am
I have the BMW K100 pistons in my shed. I will measure them and take photos, but dont hold your breath. |
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 85 Posts Member #: 2234 Advanced Member Palm Beach Gardens, Florida |
30th Jan, 2008 at 12:44:07pm
I have a K100 short block in the pile, I will pull rods and pistons this weekend. Don't think I have any 998 rods lying about, it might be a while before I can try a rod mod. |
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85 Posts Member #: 2234 Advanced Member Palm Beach Gardens, Florida |
30th Jan, 2008 at 12:44:41pm
well that was weird, the post double barfed, looks like I posted twice. No "delete" button. I will edit this second post to see what happens this time.
Edited by scooperman on 30th Jan, 2008. |
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85 Posts Member #: 2234 Advanced Member Palm Beach Gardens, Florida |
2nd Feb, 2008 at 10:42:25pm
I measured a K100 piston, yes the pin diameter is 18mm and compression height is just under 33 mm. |
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85 Posts Member #: 2234 Advanced Member Palm Beach Gardens, Florida |
2nd Feb, 2008 at 10:44:26pm
hate these double posts so I decided to edit this one. In case nobody else has found it, the web site describing Gregg Temkin's 850 can be found at
Edited by scooperman on 7th Apr, 2008. |
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1909 Posts Member #: 9764 Post Whore Northamptonshire. |
20th Jan, 2012 at 08:27:10pm
What happens if you +80 over bore it and pocket the block like if you did the 1275 head on a 998 block would that work? this is the convertion i'm thinking of doing. but this amount of machining is putting me off a little bit. |
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 16540 Posts Member #: 4241 King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner Rotherham, South Yorkshire |
20th Jan, 2012 at 08:36:22pm
If you're concerned about machining, click the banner at the top. Problem solved! On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it 
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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
20th Jan, 2012 at 11:15:31pm
I went as far as buying an 8v K100 head, then after looking at the bodging that was required, sold it and bought an SC 7-port. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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4301 Posts Member #: 1321 Post Whore Wiltshire |
21st Jan, 2012 at 09:28:34am
On 20th Jan, 2012 wil_h said:
I went as far as buying an 8v K100 head, then after looking at the bodging that was required, sold it and bought an SC 7-port. I always wondered why you went 7 port rathen then k100 - that explains it then! On 7th Oct, 2010 5haneJ said:
yeah I gave it all a good prodding |
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 8604 Posts Member #: 573 Formerly Axel Podland |
21st Jan, 2012 at 09:32:02am
I scrapped this project when i worked out how I could do a better job with a 5 Port. Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
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