well the manifold got finished up today. the previous owner did not fully weld the TB flanges. the were just tacked, then sealed with RTV. I ground the welds out and pulled the flanges off. cleaned up them both and then got them fully welded like they should be. also plugged up the extra holes that were there from the PO. this will get coated tomorrow, to match everything else then it will be done.

Anyone have any idea on the best manifold gasket? I dont want to spend this much time on everything just for the gasket to leak.

 

The intake is coming out awsome but according to your statement above, if you run 1 TB for MPG's, either the front or rear cylinders will run rich for lack of air flow right? Thats why the stock manifold had a "center TB air intake" opposed to offset. Did I misunderstand the quote above?

Seems like you would HAVE to make both TB's functional all the time.

BTW, AWSOME tig welding

 

close but no cigar.

I posted that when I had not decided if I was going to run a 99+ manifold or this one. my choices were

99+manifold with super charger.
or dual TBs with N20.

I decided that DTBs and spray would be cheaper simpler and better for DD use. along with netting higher MPGs.

As far as your question goes I def could run the dual manifold with a block off plate and one TB. think about every 4 cylinder (besides jeep) they have a manifold with a single offset TB. the idea is the entire plenum has the same internal pressure. No matter what it would still flow better then the stock thumb sized plenum.

 

but all offset manifolds have a better flow design MEANT to be run offset..




the cherokee manifold is a T set up with very sharp angles, not a swoop set up which means you will not get the air needed if you only run 1 TB for whatever reason.

and you do mean turbo right? because this is a turbo not a super charger....



and considering that you can weld. it would be alot cheaper to make a log style manifold, make an inter cooler, and just get the proper piping for your intake/exhaust set up and use.



I have seen 2 builds so far use this style set up, and because they can fab, even tho it is a tight fit it was under the $600 range easy.

I guess what I am getting at is how is Spray more cost effective?

i can see being simpler. the engine bay is a little small for a T4 turbo:



but i am talk about over all use, one is more work a little more upfront cost the other is going to run you with problems and nickel and dime you to be more expensive.

plus the numbers ppl net from a turbo set up are fantastic!!! I highly doubt you will net the same numbers

 

 

Also With the Dual TB's I hope you have a plan for the Spray to distribute it evenly.

whether that be you Y pipe both TB's and you have your tip at the front of the Y pipe, of you make to injection plates, 1 for each TB. if not you will get a strong spray on either the top or the bottom 3 cylinders and the other will get a weak spray. That will result in a big enough heat variation cylinder to cylinder that you will basically destroy your motor

 

this is actually how most 4 cylinder manifolds are. but its irrelevant cause that was only an example of an emergency situation. I am obviously going to be running DTBs.

and no I meant supercharger. the option was to supercharge it, as I have long time ago decided against turbo on an offroad vehicle, especially that has huge underhood temp issues.

as far as N20 vs SC vs Turbo

the price is going to all be very similar but n20 will be by far the easiest. there will be much less wear on the engine and it doesnt get ran 99% of the time. It will only be used when I need to get out of the mud, make it up a hill, or set a record 1/4 time. that is what will save me a ton of money the cost in fuel/repairs/and maintenance make n20 much cheaper. this jeep is going to get a ton of street miles and the power I make will be more than enough 99.9% of the time, having the ability to only use it when I need it.

the spray will def be routed properly, most likely tapped into the bottom of the manifold.

 

turbo xj?? what?

 

http://www.naxja.org/forum/showthread.php?t=1039377
http://www.505performance.com/

 

no, bolt-on xj with N20.

oh, unless you meant in general and yeah thats def nothing new

 

ive just never seen one with that on it. its pretty neat in my opinion, i wouldnt do it, but thats because i dont have money to do it

 

Spray or not, to run 1 TB at one end and expect the last 2 cylinders to be getting sufficient air/fuel mix will be tough. They'll be rich. Don't get me wrong, it'll run but I think boosted would be the way to go to force the air through that intake IMO.

 

well thats cool, but there is no plan to run one offset TB anyway. it was to run a boosted 99+ intake OR my dual TBs

I have obviously decided to run my DUAL THROTTLE BODY MANIFOLD WITH TWO THROTTLE BODIES.

I dont know why you guys like to just make up whatever you want because I had never said I would put all this time in on a DTB manifold to run a single TB. the only thing remotely similar that I had ever said to anyone, was that I could run it on one TB while working on the tuning IF I HAD to.


I am still waiting on my parts jeep, and I have been busy the past couple days so no real progress.

 

All i know is your plan is effin crazy and sweet as hell at the same time! Lol! I cant wait to see it running.

 

thanks a ton man, thats really all i can hope for. I start summer school in 2 weeks so it better be running by then.