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1312 Engine, Twin Hs2's Or Twin Hs4's


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#1 owenlcr

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Posted 18 May 2020 - 06:32 PM

As per title, I have a set of both that require a rebuild, which would be most suited to a 1275+040?

Thanks

#2 nicklouse

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Posted 18 May 2020 - 06:35 PM

sorry but neither..

 

 

but if i had to the 4s



#3 Anthony30

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Posted 18 May 2020 - 06:52 PM

HS4 carbs.



#4 owenlcr

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Posted 18 May 2020 - 08:14 PM

sorry but neither..
 
 
but if i had to the 4s



What would your recommendation be???

#5 Norfolk Boy

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Posted 18 May 2020 - 08:42 PM

Iā€™m guessing hif44 šŸ‘

#6 GT Jimmy

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Posted 18 May 2020 - 09:27 PM

I had my engine built, also with a +40 overbore, and the builder recommended a hif44 with a BBW needle

#7 owenlcr

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Posted 18 May 2020 - 09:31 PM

I had my engine built, also with a +40 overbore, and the builder recommended a hif44 with a BBW needle


Perfect thankyou, might have a look into this also, maybe fitted with a howley manifold, good to have a starting point with the BBW needle, thanks again

#8 GT Jimmy

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Posted 19 May 2020 - 08:21 AM

I had my engine built, also with a +40 overbore, and the builder recommended a hif44 with a BBW needle


Perfect thankyou, might have a look into this also, maybe fitted with a howley manifold, good to have a starting point with the BBW needle, thanks again
I only used a Howley inlet because it came with the carb as well as a K+N cone filter. Howley were based about 9 miles from us so kept it

#9 owenlcr

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Posted 19 May 2020 - 03:11 PM

Done a bit of digging and alot of people recommend the howley manifold, janspeed preferred but not readily available and not sure if they do a figment for the hif44

#10 GT Jimmy

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Posted 19 May 2020 - 04:02 PM

They're getting rarer, they've been closed for years

#11 GT Jimmy

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Posted 19 May 2020 - 04:03 PM

Twin carbs do look cool though

#12 PoolGuy

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Posted 19 May 2020 - 04:50 PM

Done a bit of digging and alot of people recommend the howley manifold, janspeed preferred but not readily available and not sure if they do a figment for the hif44

Maniflow do a manifold to suit the HIF. https://www.maniflow...54&product=1098






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