The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
Re: 1975 02tii unleaded fuel conversion (archive)
[ Follow Ups ] [ 2002 Message Board ] [ Msg. Board FAQ ]
Posted by 02fan on July 31, 2000 at 10:14:46:

In Reply to: 1975 02tii unleaded fuel conversion posted by MS on July 30, 2000 at 18:20:55:

My understanding is that aluminum heads use hard valve seats which work fine with unleaded gas. Cast iron heads pre 76 may use soft valve seats which depended on the lead for the lubricaton. The lead substitutes used in unleaded gas work ok with soft valve seats but not recommended for high compression, hard use, or towing.


What needs to be done,if anything,to convert my 1975 2002tii to unleaded fuel? It has a '121' cylinder head with higher compression and it's been suggested that I lower it with a different head gasket, is this needed? Some articles recommend changing the valve seats and stem guides, others say nothing has to be changed. What did BMW do when unleaded came in?




Follow Ups:


[ Follow Ups ] [ 2002 Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk.
Roadfly.com Logo © 1997 - 2008 Jump Internet Inc. All rights reserved.