HIF7 twin SU

Author
Discussion

Stevo302

Original Poster:

394 posts

138 months

Saturday 7th March 2015
quotequote all
Hi, does anyone have a good pic or a link to what/ the carbs are linked up. Detail to the lineages etc. I've got 2 with no linkages, pipes or cables.
Just need some info to get them working properly.
Regards.

Stevo302

Original Poster:

394 posts

138 months

Tuesday 10th March 2015
quotequote all
Oh........no help then?

jith

2,752 posts

215 months

Tuesday 10th March 2015
quotequote all
These are the guys you want stevo.

http://sucarb.co.uk/linkage-parts/connecting-spind...

Got a pair of needles for an XK150 from them last week. 24 hour delivery, and very helpful.

J

Stevo302

Original Poster:

394 posts

138 months

Wednesday 11th March 2015
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Great, thank you.

Stevo302

Original Poster:

394 posts

138 months

Saturday 21st March 2015
quotequote all

This is all I've got. I know where the fuel goes in but that's about it.
Regards.

checkmate91

851 posts

173 months

Tuesday 24th March 2015
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I've got a spiral-bound SU parts manual in the loft, can get that down to see if there's anything of interest for you. My main SU interest was mini (a-series) engines. What you've got, I think from memory, is two single HIFs, did you not buy them as a matching pair? What's it for, what did the ones you took off look like, any connecting rods for the throttle plates to re-use etc etc etc.

Stevo302

Original Poster:

394 posts

138 months

Wednesday 25th March 2015
quotequote all
They were a pair off a Jag or so was told. I've had them a few years now. I have a 71 tvr with a tr6 engine. Twin hs6s in at the moment. Was going to use them for a up grade if possible.
Any help would be great.
Regards

jith

2,752 posts

215 months

Thursday 26th March 2015
quotequote all
Stevo302 said:
They were a pair off a Jag or so was told. I've had them a few years now. I have a 71 tvr with a tr6 engine. Twin hs6s in at the moment. Was going to use them for a up grade if possible.
Any help would be great.
Regards
The only Jag fitted with these particular carbs was the Series 3 XJ6 3.4 litre. The 4.2 was injected, but Jaguar decided to use carbs on the 3.4 engine when the rest of the world was using injection; this was as late as '86 incidentally!

The pair you have will work with the correct linkages, but you'll have to change the needles as it will be far too rich with the Jag needles. If you do it correctly you should get a significant improvement in fuel consumption.

Use this chart to work out the correct needle size :- http://www.mintylamb.co.uk/suneedle/

Best of luck.

J