carb clearance issues 970s

KA2S4 · Post by **KA2S4** » Mon Oct 03, 2011 9:56 am

I'm test fitting the carbs to my 970 and I notice the carb float bowl is REALLY close to the bulkhead on the right-hand carb (when viewed from in front of the car)

It's even worse when i use the half inch carb spacer that i need to make the carbs clear the exhaust...

Any one else had this issue? guess it's the same problem on a 1070 too?

James

ivor badger · Post by **ivor badger** » Mon Oct 03, 2011 12:19 pm

Not a problem on my 1071. will ask my friend who had a 970. have you the remote and top tie bar fitted?

Post by **Ronnie** » Mon Oct 03, 2011 5:43 pm

The carburettor's should be symmetrical, have you got the correct float chambers??

Post by **JC T ONE** » Mon Oct 03, 2011 6:10 pm

Ronnie wrote:
have you got the correct float chambers??

And manifold ? I have seen many different twin SU alloy manifolds, all made by MOWOG,

But they are different, as some are for "inline" engines = Midget / Healey / etc

sandman · Post by **sandman** » Mon Oct 03, 2011 6:52 pm

- What type of carbs are you trying to make fit?
- what type os casting numbers to they got?
- Which manifold are you using - look at casting number.
- What type of "drive" is the car... i.e LHD or RHD?
- What type of front subframe is on your car? Auto-type?

KA2S4 · Post by **KA2S4** » Mon Oct 03, 2011 7:47 pm

All engine mounts/remote/tie bar fitted
RHD car, std manual subframe.

They are just twin HS2's on a 661 manifold.

The carbs are closer to the radiator end of the engine bay anyway and the bulkhead curves round, I'll post a photo.

J

Post by **JC T ONE** » Mon Oct 03, 2011 8:53 pm

sandman wrote:

- What type of front subframe is on your car? Auto-type?

Autotype should only improve space, for carbs, as it moves the engine forward.

KA2S4 · Post by **KA2S4** » Tue Oct 04, 2011 8:15 am

here is a photo with the half inch spacer.

The black plate to the right has quite a thick rubber gasket under it (of my making) so i'll start by replacing it with a thinner one.

970s · Post by **970s** » Tue Oct 04, 2011 4:11 pm

Hi,James,
My HS2 SU set up is the same as yours, using 661 manifold, correct su angle adaptor block, but my fuel hose almost touching the float bowl, cause I had used the dry susp hose leading plate, looks like you are using the wet bracket, so fuel hose clears the bowl,in my case I need to re route the hose, once it does not touch the engine bulkhead, it is OK!
Are you using the 544 cam on your little S motor? What angle you time-in the cam?
Lots of fun, right?

Al

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carb clearance issues 970s

carb clearance issues 970s

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