Submitted: Wednesday, Jan 26, 2005 at 20:57
ThreadID: 19798 Views:1619 Replies:2 FollowUps:0
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Will the fitting of extractors to a standard 1hz LC, improve performance and give better fuel economy. Also if going to fit them is it necessary to replace the whole system or just the cast iron manifold.
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Reply By: banjodog - Wednesday, Jan 26, 2005 at 21:49

Wednesday, Jan 26, 2005 at 21:49
The fitting of extractors will be better suited if mated to a free flowing exhaust system - 2.5" or even a 3". So by the sounds of it a complete new system for your Cruiser.

There are 2 types of extractors - tuned length and interference. The tuned length are mainly suited for close to max engine rpms to have any effect on the overall performance. While the interference type ones will work well in the 1200rpm to 4000rpm range - suitable for low end stuff.

Both will improve performance but for different reasons due to their design. Fuel economy is argueable but should improve if any. Genie used to make really good ones (interference type) but shop around for brands / costs / warranty.

Depends as to how long you keep the vehicle but you could consider a stainless steel muffler too.
AnswerID: 95037

Reply By: H2O - Thursday, Jan 27, 2005 at 10:17

Thursday, Jan 27, 2005 at 10:17
I put a set on my 1hz with a 2.5 or 2.75 (can't remember) and it certainly held the hills a heap better but top end suffered. 120 was the fastest I could go
AnswerID: 95103

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