Hey guys looking for a simple how to to convert a 2.3L HO manifold to fit the 2.4L. I know that the runners need to be change/port matched to the intake side of the head. Seems easy enough just gonna use a gasket and match up the ports with a grinder. I am more asking this question for the TB, can i run the bigger HO TB? Do i need to change around the IAC and the map sensor? I remember reading up on it a year or so ago but forget the small things about the swap. What about the throttle cables and what not? I remember if you change to the 2.4TB you need to drill a hole so it can bolt up to the HO manny. I rather keep the bigger TB though so what do you need to change over to keep that one on the manny? And one last thing what about the vacuum lines anything i should know about them? Thanks allot guys please help me
all you need to do is slot the holes on the manifold so the bolt holes will line up then get an adaptor flange from Chris fontana sorry if i spelled it wrong. think there is a group buy on the flanges.
you can just put a 2.3l T/B on all the sensors from the 2.3 will plug right in.
2.4 tb 52mm
2.3 tb 56mm
~Black~FIRE~ wrote:Hey guys looking for a simple how to to convert a 2.3L HO manifold to fit the 2.4L. I know that the runners need to be change/port matched to the intake side of the head. Seems easy enough just gonna use a gasket and match up the ports with a grinder.
nope, its not that easy. the ports are nowhere near the same shape, once you get your stock manifold off you'll see exactly why. the HO manifold has HUGE oval ports and the 2.4 head has 'B' shaped much smaller ports. to do it the RIGHT way, you either need to do one of 2 things, either cut the stock HO manifold flange off an weld on a 2.4 flange (that needs to be custom made or chop one of an $800 venom intake) or add material into the HO manifold ports to kind of 'mimic' the 2.4 head ports.
or you can try and find a fontana 2.3 ho manifold to 2.4 head adapter flange that would work just fine. but if i were you, if you dont have cams or a ported 2.4 head and a full exhuast i wouldnt even bother with the ho manifold. theres been dyno proof that it doesnt help and acctually HURTS performance on a stock engine.
AND for those of you saying 'wtf who finally dynoed one' talk to mastin...
Edited 1 time(s). Last edited Monday, November 19, 2007 10:26 AM
^^ results coming shortly.
Just gotta scan in my sheet and write up a nice post.
-M
Remember....syringes go in the RED waste basket.
Ya i have had to stock manny off lots of times. And i know there B shape. I will be going boost soon and dont want the plasic bs thats on there now. And who said i didnt have bolt ons.
hey im kind of confused...everyone says put the 2.3 Tb on yer 2.4 mani and i tried to do and the bolt holes dont line up for a proper seal and i had to put back the 2.4 TB
yes it will if its a 2.3l t/b it will line up but most of the time the throttle lever hits the manifold keeping from lining up. think you need a t/b spacer to make it work to hold the t/b away from the manifold.
