What extractors??

Birko · tinkerer Joined: 03 Apr 2002 Posts: 180

Hey.
im currently building up a gem engine that is..

1600 bored to fit either 1800/2000 slugs
ported head with oversize valves
crow 3000-7000rpm cam
and some kinda induction system that i havent decided on (either single or twin carbs or efi?)

well my question is what are a good set of extractors\... power wise.. with this cam i figure all my power will be top endish so i wanted a set of 4-1 ones but cannot get any, only custom jobs. so is ther any good 4-2-1 ones? i want about 150hp at the engine.

i can get a set of motivator 2nd hand ones but i dont no if these are any good. what extractors does anyone reccomend?

Also what size exhaust should i go 2 1/4` or 2 1/2` ???

any way cheers

Gemini Driving Yobbo · petrol head Joined: 26 Feb 2002 Posts: 3897

ive got 4-2-1s on mine and there genie extracors from the wreckers. i would go teh 2.25 incher exhaust

darla · rice boy Joined: 11 Oct 2001 Posts: 23

ross
daves getting tuned length 4-1 extractors with 1 5/8 primary pipes going to a 2.5 inch collector for $600

Gold TX Sleeper · backyard mechanic Joined: 05 Feb 2002 Posts: 509

Elky has a set of 'Pacemaker' 4 into 1's. These guys make some really good extractors. If you or anybody else haven't snapped them up in around 4 weeks (if they haven't already been sold). I'm definately grabbing them.
Jasyn...