Hi list, Does the 1300 Triumph Spitfire twin HS2 carb manifold bolt right up to the 1500 Midget head? If so, is it also possible to open up this 1300 manifold to match the port sizes (I'm assuming th
The TR 1300 and 1500 are identicle. They took the 1296 cc engine, kept the same bore but dished the pistons to lower the compression/raise the cc output. The blocks are identicle too except for loosi
It's a bolt on, and what many of us with 1500 Spitfires have been running for years now as a hop up. The manifold passages in the head are the same size, so there is no opening up of the manifold run
Hi Nolan, Thanks for your reply. Can you confirm that the manifolds from Mk2 - Mk4 Spitfire are all the same and will the 1500 Midget (obligatory MG content). Also I guess the twin HS2 Spitfire 'hop
Yes, all the same. Yes. Although again, if you are paying to buy a set of carbs, go for the proper HS4 carbs for the engine. Even by factory definition the HS2s are "too small". If you have a set of
Mk1 and Mk2 will not fit. These heads are single ports, siamesed internally. It's the Mk3, Mk4, and 1500 that interchange. These are dual port heads. The manifolds are quite different in appearance.
<< If you have a set of HS2s around, slap them on, but proper HS4s won't cost anymore and flow a lot more air. >> Can you just switch the carbs on the same manifold? Or is there an HS2 manifold and a
Two different manifolds. The HS2's have the mounting bolts oriented straight up and down, the HS4's have them at a slant. The throat sizes under the carburetors are different, though the manifold run
At half throttle? That's not a meaningful data point. If you are part throttle, you aren't caring about performance. The goal of the throttle is specifically to impede air flow, that's what it's ther
Hi Nolan, Thanks for your very informative reply. I didn't realise there were 2 different 1500 ZS manifolds but it makes sense because there does seem to be more than one part number for this manifol
I think that Nolan does make valid points and descriptions. I agree the throttle is their to impede flow BUT in such a way as to give controlled acceleration. If you are driving at half throttle this
<< I wouldn't (and I have been offered) take a s*itfire if it was free. -- Frank Clarici >> Frank, With your experience I would expect you to take a Spitfire and replace the engine with a hot 1275 an
This is an interesting question. It seems that the only manifold for a single carburetor on the 1500 Midget is the stock manifold which comes with the single ZS. I have not found an after market mani
Like I already told you, there is a world of difference *across the board* going from the lousy ZS to the superior SU's. The world of engine performance does not merely exist at wide open throttle,
There is one other possibility, and that's the downdraft weber type. But the work involved in modifying it to fit a single SU would make it prohibitive. And even here with the single weber, there are
wisconson=snow....snow=wisconson or is it hey! i do knowsnow does not equal cheese. lol. chuck -- Original Message -- From <JustBrits at aol.com> To: <nosimport@mailbag.com> Cc: <spridgets@autox.team
No, California has the cheese now. #1 in the nation. Wisconson only has a monopoly on snow now. Florida stole all our oranges, and our Disney monopoly so we had to focus on something else, cheese was
chuck -- Original Message -- From Toby Atwater <Toby at intri-plex.com> To: 'Charles Christ' <cfchrist@earthlink.net>; Spridgets@Autox. Team. Net (E-mail) <spridgets@autox.team.net> Sent: Tuesday, D