Guest EnthuZiast Posted July 17, 2003 Share Posted July 17, 2003 Hi, I saw a 240SX TB on Ebay converted for use in the L28 and it sparked my interest.... All the stuff I read about when I did the search pointed to the fact that this is a mod only for turbos. I'm slighty out of my element, so give me the lowdown guys. Is it something I should consider doing? Also, I saw that Tim240Z had a supplier for spacers. Do you still, Tim? Thanks Guys, EnthuZiast '79 280ZX n/a Quote Link to comment Share on other sites More sharing options...
ecp48 Posted July 17, 2003 Share Posted July 17, 2003 The 240SX throttle body is good for any "modified" L28. It allows a less restricted flow, whether Turbo or naturally aspirated. You won't see much of an improvement, unless you combine it with a K&N style airfilter and header with low restriction exhaust at a minimum. The throttle body is just a part of the intake side restriction on the fuel injected L28s. You still have the to deal with the AFM as well. I'm working on one now with a shaved p-79 head, Cam, dual exhaust with header, and a 280ZXT AFM. Ed Quote Link to comment Share on other sites More sharing options...
Guest EnthuZiast Posted July 17, 2003 Share Posted July 17, 2003 how hard is it to set up? and how much improvement would there be w/ just TB and CAI? Thanks Quote Link to comment Share on other sites More sharing options...
ecp48 Posted July 17, 2003 Share Posted July 17, 2003 Not hard. You need the spacer (JSK/Juan) if you are going to maintain the cold start valve. You need to change the cable connections on the throttle body to an arm with the ball linkage, like is the original for the 280Z. Look closely at some of the TBs advertised on ebay and you will get a good idea of the changes. As to improvement, unless you open up your intake starting with a low restriction filter and improve your exhaust, I doubt if there would be any significant improvement. All changes must be looked at as a total effort with regard to flow in and out of the engine. Think of it as a pump. Whatever you improve to allow more flow in has to be balance by the improvement in flow out. One must balance the other and the stock '78 280Z tail pipe to manifold header on my car is much more restrictive than the '75 or earlier Zs. Then again, the Weber Bigthroat was advertised for years as improving the L28 all by itself. Good luck. Quote Link to comment Share on other sites More sharing options...
wigenOut-S30 Posted July 17, 2003 Share Posted July 17, 2003 I talked to Pallnet tonight and he just got done making 10 more spacers for the TB conversions. Email him if you are interested. monkeymn@hotmail.com Quote Link to comment Share on other sites More sharing options...
Guest Looking for apt in Alb Ny Posted July 17, 2003 Share Posted July 17, 2003 Quote Link to comment Share on other sites More sharing options...
Clifton Posted July 17, 2003 Share Posted July 17, 2003 Arizona Z Car is coming out with some anodized aluminum ones. Don't know how soon though. Quote Link to comment Share on other sites More sharing options...
Cruez Posted July 18, 2003 Share Posted July 18, 2003 Need to do some machine work on the intake if you really want to get the performance improvement... See Pic Quote Link to comment Share on other sites More sharing options...
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