 Experience w/46mm Weber or PMO’s and 36mm venturies on an otherwise RS spec 2.7L?, Only street driving; not track |
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| Rufus |
 Jan 2 2024, 07:09 PM
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Member  Group: Members Posts: 314 Joined: 8-April 06 Member No.: 5,840 Region Association: None 
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Does anyone have firsthand experience to share on running 46mm carbs and 36mm venturies, either Weber or PMO’s, on a street driven 2.7L engine that’s otherwise built to RS specs; I.e. 8.5:1 P&C, ‘S’ cams, 6500 rpm power peak? Thanks in advance for any input.
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| Rufus |
Jan 2 2024, 11:03 PM
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Member Group: Members Posts: 314 Joined: 8-April 06 Member No.: 5,840 Region Association: None
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QUOTE(infraredcalvin @ Jan 2 2024, 09:11 PM)  Why not 40s? I think you may be choking down the 46s a bit too much for a street driven engine… Before encountering fuel system problems related to debris, vapor leakage, etc., my 2.7L RS spec engine ran great (idle, cruise, wot, transitions, low speed tractability, etc) with 40IDA’s and 36mm venturies. I more recently saw this: http://www.performanceoriented.com/throttl...-venturi-sizing My understanding from that is a 46mm throttle body’s a better match to my 36mm ventury than the 40’s. Asking for 1st hand experience as confirmation. Just doin a little winter dreaming during times when I’m unable to work on my 914. |
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Posts in this topic
Rufus Experience w/46mm Weber or PMO’s and 36mm venturies on an otherwise RS spec 2.7L? Jan 2 2024, 07:09 PM
mepstein PMO’s are better track carbs than street. They a... Jan 2 2024, 07:44 PM Rufus
PMO’s … quality control isn’t great.
Thank... Jan 2 2024, 07:56 PM
mepstein
PMO’s … quality control isn’t great.
Than... Jan 2 2024, 08:11 PM infraredcalvin Why not 40s? I think you may be choking down the ... Jan 2 2024, 10:11 PM BillJ That was the config on my 2.7 with PMOs and that e... Jan 3 2024, 07:48 AM Rufus
That was the config on my 2.7 with PMOs and that ... Jan 3 2024, 10:04 AM |
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