BBC 509cid tunnel ram efi build.
#71
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Should i use this type of seals on exhaust and intake?
https://www.summitracing.com/parts/cca-517-16
https://www.summitracing.com/parts/cca-517-16
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sutphen 30 (05-04-2024)
#72
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does flotech give you the guides top cut dia. for the valve seals.viton is what you want.
#73
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#74
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Found these runner extensions for weiand tunnel ram. 2" and 4" available.
https://www.ebay.com/itm/23550828552...4AAOSw2GlXKNCR
https://www.ebay.com/itm/23550828552...4AAOSw2GlXKNCR
#75
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Found these runner extensions for weiand tunnel ram. 2" and 4" available.
https://www.ebay.com/itm/23550828552...4AAOSw2GlXKNCR
https://www.ebay.com/itm/23550828552...4AAOSw2GlXKNCR
Only thing we could figure was that the spacer really screwed up the air/fuel distribution.
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Marc
www.mercruiserparts.com
www.go-fast.com
www.bammarine.com
www.cyborgtransmissions.com
It's not alive -www.BoatStuffExpress.com - temporarily retired
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#76
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Back in the early 80's I had a pair of engines built by a big name guy near Detroit. Had those same intakes. Made good power but in order to lower the RPM band and increase torque he made some spacers like that. Worked great on the dyno. However first run out on the lake it broke one balancer clean off. On disassembly found the other one seconds away from the same fate.
Only thing we could figure was that the spacer really screwed up the air/fuel distribution.
Only thing we could figure was that the spacer really screwed up the air/fuel distribution.
#77
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Last edited by JaniH; 05-06-2024 at 01:37 PM.
#78
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Some progres today, i set/cut angles for the injector bungs, still needs quite a bit welding but not bad.
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ksalmine (05-06-2024)
#79
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Made a good deal of 8qt milodon full kick out pan. Dont know if it is any improvement over the merc original 8qt with scraper, but it looks cool.
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articfriends (05-09-2024)
#80
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Heads are ready. ferrea 6000, int 30dg backcuts, new seats, bowl/short turn blend, good port had too high air speed @.600 and up, trimming the head bolt pump fixed the problem. 1=good port, 2=bad port, 3=exhaust no pipe, 4.5" bore adapter.