[Spridgets] Racer guys Engine help

[bmwwxman .]

Check the firing order.  It's easy to get a plug wire or two wrong.....

Cheers!!
Jim


On Tue, Jul 15, 2014 at 2:25 PM, Ewing <oldsaabguy at comcast.net> wrote:

> It won't run at all.
>
> Yes, I am familiar with 4 stroke performance cams and a "loping" idle
>
> I have changed distributors.
>
> I have messed with timing.
>
> I have messed with carburation (richer and leaner jet adjustment )
>
> I still get backfiring through carb (front) and I have always had lousy
> power.
> This is butt dyne.  I previously had a dead stock 948 and then I added a
> Judson.  This has less "umph" than either of those.
>
> I have not changed carbs nor have I removed and rebuilt but that's an
> option
> and maybe my next thing to do as previously I had planned on gaining
> access to
> the gears and chain to verify proper timing.
>
> Yes, I have rebuilt SU Carbs before.  Yes I can sync multiple carbs  (The
> E-Type has 3!).  NO, I don't use a Unisyn but a really neat older unit
> whose
> manufacturer escapes me at present. No, I don't have any other needles..
> well.. that's not strictly true, I have about 4 but as all of the needles
> have
> the same diameter at idle it doesn't much matter.
>
> I'll try that this weekend or sooner if it stays cool.
>
> I know that this sounds like I'm pissed and I am, mostly at myself as I
> hate
> not being able to diagnose a problem on so simple a car.
>
> Lester
>
>
> On Jul 15, 2014, at 1:03 PM, "sprideteer at yahoo.com [bugeye]"
> <bugeye at yahoogroups.com> wrote:
>
> > One cylinder @ 185 isn't going to make a difference you can feel on the
> road.  It "could" have a broken ring in that cylinder, but I'll bet not.
>  In
> fact I'll wager you find nothing obvious if you tear it down.
> >
> > I think your lack of power is something external - carburetion, ignition.
> >
> > Or are you just expecting too much?  Can you get it on a dyno to adjust
> carbs and ign?   I'd expect a medium hot 1380 to make maybe 75-80 HP at the
> rear wheels.  100-110 HP for a balls-out race engine.
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>
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-- 
Cheers!!
Jim Johnson
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