 SVRA RMVR HSR 914/6 gt vintage engine questions. |
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| jmz |
 May 16 2023, 05:24 PM
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Member  Group: Members Posts: 165 Joined: 11-April 16 From: Lone Star State Member No.: 19,886 Region Association: None  |
Thinking of putting together a 2.3 or 2.4 914/6 gt spec engine that will be vintage legal
Anyone here running one? Looking over different rules it’s hard to decide on short strike (66mm crank) or long stroke 70… Logged a call to SVRA tech waiting on a a call back Anyone have any experience or thoughts? I have a set of large port racing heads (41 mm intake ports) some RSR sprint cams, twin plug distributor and 46ida carbs already. …plus a donor 2.0 litre. (Matching #s to my six) Hope to hear some thoughts and/or experience. |
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| BillJ |
May 16 2023, 06:55 PM
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Senior Member Group: Members Posts: 1,098 Joined: 4-March 13 From: charlotte, NC Member No.: 15,610 Region Association: None 
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I am having a legal motor built now. It is 70.4 with custom 85 pistons. If you go long stroke that is the only size that will keep you under the 2399 limit (well techncially you can do 86.2). Otherwise just got with 2.0 ltr 66mm crank and have fun in that class. Staying under the 2399 limit makes you legal in several orgs without competing with the 3.0 RSRs.
I see you have a 2.5 already. What is your experience there? |
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Posts in this topic
jmz SVRA RMVR HSR 914/6 gt vintage engine questions. May 16 2023, 05:24 PM
jmz
I am having a legal motor built now. It is 70.4 ... May 16 2023, 10:31 PM
BillJ I do think the <2400cc is the sweet spot for c... May 17 2023, 04:35 AM jmz Bill, any specs on your build? Port sizes, cams, ... May 17 2023, 07:52 AM BillJ 46/41 for ports and the cam is a DC60 or DC43-102.... May 17 2023, 08:41 PM |
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