 Vac advance dizzy help - carb compatability |
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| fall-apart-dave |
 Feb 19 2007, 06:57 AM
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#1
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Member  Group: Members Posts: 61 Joined: 23-September 06 From: Northumberland, UK Member No.: 6,898  |
Can anyone help me out here... Having trouble finding a good dizzy for my 914 / T4 motor. Have a vac advance, but have ditched the old carbs.
Can a vac advance be made to work with IDF / DRLA / HPMX carbs? They don't (or don't seem to) have provision for a vac advance. Porting the manifolds aint any good I'm told, it'll suck too hard... Has anyone ever managed to get it working? Can anyone help me out here? Thanks Dave |
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| So.Cal.914 |
Feb 19 2007, 10:17 AM
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#2
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"...And it has a front trunk too." Group: Members Posts: 6,588 Joined: 15-February 04 From: Low Desert, CA./ Hills of N.J. Member No.: 1,658 Region Association: None |
Hi Dave , I've used vac off the base of the carb/manifold on many cars for years
on different projects but I still think with the engine you are talking about building you should consider a centrifugal advance dizzy. The Mallory unilite is, I heard a very good unit. The Bosch dizzy for a vw or the early porsche will also work. |
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| Bleyseng |
Feb 19 2007, 10:35 AM
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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 |
The stock 914 dizzy with the trigger points will work fine if you have that. Its vac and centrifical adv.
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| jr91472 |
Feb 19 2007, 11:03 AM
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#4
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"I'm pacing myself sergeant..." Group: Members Posts: 1,205 Joined: 2-August 04 From: McKinney, TX Member No.: 2,437 |
Because I didn't want to spend the $ on the Mallory, I follow the advice of a long time Porsche and 914 mechanic here in Dallas.
He said that the stock dizzy that came with the 1.8L L-jet had an advance curve "best suited" (not perfect) for a car with carbs. P/N 022-905-205 AA (or AB). It took some time but I eventually found one. Works great, no noticable lag off idle. |
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