MG-Cars.net

Welcome to our resource for MG Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGB Technical - HIF4 needle guess

I'd appreciate suggestions as to needle choice for HIF4s going on an engine with 1995cc overbore, fast cam, K&Ns, freeflow exhaust. They are going to be tried in place of a 45DCOE just for the sake of interest following the many discussions about the pros and cons of the Weber.

Many thanks,

Steve
Steve Postins

I'll venture AAA to richen enough to match the K&N's at higher revs. This is from my very limited experience. Mine is a 1868 Burgess head and block, fast road cam, K&N's, Peco exhaust. Be sure to post your results for posterity! FYI, I think there is a link for a needle chart at:
http://www.mgbexperience.com/

Dean
Dean Lake

Steve,

My 74 1/2 18V with HIF-4's is bored .040 over, mild cam, head with larger intakes and 9.5:1 compression with K&N pancake filters. I just changed from ABD to AAA needles with great results.

Cheers, Doug
Doug Keene

Thanks. I've got to overhaul the HIFs. Once that's done I'll have a play with them and let you know the outcome.

Steve
Steve Postins

This thread was discussed between 15/08/2003 and 16/08/2003

MG MGB Technical index

This thread is from the archive. The Live MG MGB Technical BBS is active now.