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Advice please Twin SU HS4 air filters

Posted: Wed Mar 11, 2020 10:49 pm
by kit of bits
Evening chaps.
As per title, I'm looking for advice for air filters for my sporty 1275GT (100 BHP)
MED assembly is a bit overt, k&N cones are nearly £200! I know this is a small price if it’s saves the engine..
Any other options?
Thanks D

Re: Advice please Twin SU HS4 air filters

Posted: Thu Mar 12, 2020 6:14 am
by johnv
I'm looking at ram pipes with 'socks' at the moment, but am also interested in alternatives..

Re: Advice please Twin SU HS4 air filters

Posted: Thu Mar 12, 2020 9:38 am
by Polarsilver
Had the same "how much" cost issues .. so for my GT the solution was 2off Piper Cross Filters they are a soft foam filter cover with plated steel base & top.. work ok with a good intake noise but i dont care. 8-)

Re: Advice please Twin SU HS4 air filters

Posted: Thu Mar 12, 2020 1:50 pm
by CooperTune
I'm currently assembling a 1400 CC GT power unit. The BOC it will power has had an interesting life. Beginning as an SPI that was converted to 40DCOE followed by a 44HIF. Nothing seemed to make this guy happy. I believe the SPI cam was not supporting the carb changes. The intake system currently is a pair of HIF38s off a MGB. I have looked at the choices and at the idea of a twin 1 1/4 Cooper housing. Nothing seemed right till I noticed how nice my test stand intake system twin 1 1/4s with the can type K&Ns. I ordered one center and one offset mount along with their stubs. Yes,the price was a little high. I really don't like the cone type filters. I'll try to get a picture posted. They do look the part. Steve (CTR)

Re: Advice please Twin SU HS4 air filters

Posted: Thu Mar 12, 2020 7:32 pm
by kit of bits
I’m now sorted with some K&N’s thanks to a forum member..
These are my preferred filter the problem we’ve had with foam filters in the past especially with webers is fuel/ vapour being absorbed into the foam , then a bit of a cough and it’s a fire ball..
D

Re: Advice please Twin SU HS4 air filters

Posted: Thu Mar 12, 2020 7:44 pm
by Pandora
I have a flat rectangular K&N washable element that was fitted to the van on a sort of quadrant moulding/ housing that sat behind the carb, with the filter facing upwards. Back then the plastic housing was cracked, so gaffer tape added a frison of style to the under bonnet area :lol:

Weirdly, I still have the element, but the housing has gone missing in the intervening years, so I think I'll have to mould something to suit.

One day.

Not really a rush :lol:

Al