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 Sides
A.k.a.: Dave Sidery
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 posted on November 23rd, 2012 at 07:23 AM |
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Jetting 48 IDA's on 2.4 ish 914
I know I know... tough question, but just hoping some of the IDA peeps can give a sensible starting point for a friend's 914.
Unfortunately don't have engine exact specs (long story), but basically:
- freshly rebuilt 2.4 something
- K8 (300 duration, .500 lift ?)
- Mild porting job (suspect intakes only)
- CR in the 9.5'ish:1 kindof range.
- In a weekend and semi-track car, with plans to spin to 6000 or so.
Carbs currently have:
- 42 Venturi's
- 130 Mains
- 190 Airs
- 50/10 Idles
- F7 e-tubes
I don't have my hands on it (yet), but the dyno guy has been pulling his hair out with it... registering lean on A/F (13:1 @ WOT) but still
apparently fouling plugs.
How similar are they to jet to IDF's ?
My first thoughts are venturi's a bit big, and would've thought more like a 60/10 idle, 155-160 main with the 190 air. Maybe F11 e-tubes.
Thoughts ?
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 matberry
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| posted on November 23rd, 2012 at 08:34 AM |
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Looks like typical 'non-volksie dude jetting. Go up in mains and idles, around 140+ and 55-60. AFR is prolly off idle stumble not getting cylinders
cleanburning due to sync and idle tune
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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Sides
A.k.a.: Dave Sidery
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| posted on November 23rd, 2012 at 01:42 PM |
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Yeah Matt - the jetting looked really weird to me too.
Everything I knew was saying needed to go larger, guess just not sure how different a beastie IDA's are from the IDF's I'm used to.
Thanks heaps the suggestion !!!
Never driven a 914 before, so looking forward to it being sorted and having bit of a fang...
VWDCQ vice pres & web dude - vwdcqinc.org.au
Join a car club - get car peeps
My toys
'70 Hillclimb Bug 'Jezebel' w/- Haltech EFI - http://bit.ly/VwTNtQ
'60 KG Coupe - resto kinda started
01 New Beetle - gf's car, but I turn the spanners |
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Gracey
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| posted on November 24th, 2012 at 01:37 PM |
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What's the fuel pressure??
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colin
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| posted on November 24th, 2012 at 06:36 PM |
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Sides,
55 idles
150 mains
40 vents
200 airs
Cheers Col
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Sides
A.k.a.: Dave Sidery
Veteran Volks Folk
Posts: 2220
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| posted on November 24th, 2012 at 07:41 PM |
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Owner has gotten the car back today, and sheesh !!!
- "dyno guy" had bypassed the fuel pressure regulator since "it wasn't needed"
- the f7 e-tubes are actually f11's... not a big deal, but if someone can't correctly ID an e-tube, can they read numbers on jets ?
- the "50 idles" it had are actually marked 60... so obviously no - they can't read numbers on a jet !!!
VWDCQ vice pres & web dude - vwdcqinc.org.au
Join a car club - get car peeps
My toys
'70 Hillclimb Bug 'Jezebel' w/- Haltech EFI - http://bit.ly/VwTNtQ
'60 KG Coupe - resto kinda started
01 New Beetle - gf's car, but I turn the spanners |
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vassy66T1
A.k.a.: Marcus Vass
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| posted on November 25th, 2012 at 10:56 AM |
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That's comedy ... I wonder why he couldn't get a handle on it?  
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matberry
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| posted on November 25th, 2012 at 04:01 PM |
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mmmm I see that shit every day. Fucxin goose mechanics....THEY are EVERYWHERE
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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