Chris,
Sounds just like the problem I had when I was experimenting with needles on my
HS2 carbs that are attached to my Spit 1500 engine. It
was with the needles that are specified for the MGA 1600 engine. Going back to
the stock needles for a Mk3 engine solved the problem.
Don't ask what they are, I have forgotten and don't want to tear into the carbs
until they start doing something bad.
Joe
Chris Sharp wrote:
>
> Howdy--
>
> Here's one for all y'all SU experts out there.
>
> A neighbor of mine and his teenage son both have mid 70's Datsuns. They've
> swapped the original engine (1300 I think) for the larger (1500?) Datsun
> engines. They are both using the stock Datsun ignition. Recently, they
> converted them both to SU HS-2 carbs using a special manifold made for this
> application. Now they both have developed the same problem: the engine
> cuts out abruptly above 5000 RPM with a strong gasoline smell, cuts back in
> by lifting off of the accelerator. The best way to describe it is like
> disconnecting the ignition. But since neither car had this problem before
> the carb swap, the SU's are being eyed with a great deal of suspicion.
>
> Knowing I have SU's on my Spit, they drew me into the conversation. I'm
> half-way decent with a wrench but this one's got me stumped. Any ideas?
>
> Chris
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