 94mm vs 96mm, pistons |
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| seanery |
 Jun 23 2004, 06:07 PM
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#1
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waiting to rebuild whitey!  Group: Retired Admin Posts: 15,854 Joined: 7-January 03 From: Indy Member No.: 100 Region Association: None  |
The engine I'm taking apart has 94mm euro pistons in it. Would there be any difference using 96mm flat tops? I mean would there be any seat of the pants feeling?
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Replies(1 - 7)
| McMark |
Jun 23 2004, 06:27 PM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Displacement versus compression. Good question. If you have 96 flat tops, you can build compression in the head and have the best of both worlds. (IMG:style_emoticons/default/smile.gif)
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| Jake Raby |
Jun 23 2004, 06:40 PM
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#3
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Yep, about a 10% power change , especially if the cam is not stock..
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| Bleyseng |
Jun 23 2004, 06:47 PM
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#4
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Soo lets see, if a stock 2.0l dynos at 80 rear wheel hp then you would get 88 rear wheel hp. Damn thats pretty good.
The best my 2.1 djet motor dyno'd was 95hp at the rear wheels. Geoff |
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| seanery |
Jun 23 2004, 07:09 PM
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#5
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waiting to rebuild whitey! Group: Retired Admin Posts: 15,854 Joined: 7-January 03 From: Indy Member No.: 100 Region Association: None |
Jake,
the cam is a webcam 494, with dual idf 40s. |
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| Jake Raby |
Jun 23 2004, 07:21 PM
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#6
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
VERY Nice cam... Not great for HP off the shelf but wow is it torquey and smooth.
Run that sucker at 9:1 with those 96s and its good for 115HP, with stock valved heads.. |
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| ruddyboys |
Jun 24 2004, 11:27 AM
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#7
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Hummel eigentümer Group: Members Posts: 594 Joined: 3-March 04 From: Monroe, NY Member No.: 1,749 Region Association: North East States |
I know the PO replaced the cam, is there a way to know what cam I have without splitting the case?
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| Jake Raby |
Jun 24 2004, 12:18 PM
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#8
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Remove the oil pump and see whats stamped on the cam drive flange..
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