Getting air thru a TBI

[DaytonaTurbo87]

Quote:

Originally Posted by Wizard The duration/overlap of the cam is what makes the difference. Since I'm putting the N/A MPFI on 2.2 from scratch (not TURBO!!) what air box stuff is easier to adapt from junkyards? Cheers, Wizard

I did this on a 2.2(carbed engine at that) as well, put a one piece late T1/T2 intake on and threw on 87 T2 electronics. The air box I used was just one from a log intake T1. It's got a big opening, plus the air box has the provision for the pcv line hookup.

[rickhmn]

I do have one of the older cars with the tube off the TBI to a box. I thought too that it looked a little less restrictive. That would still look real "stock" too. I plan too use that head too since it seems to flow a bit better. I think i've read that the 87 and newer intake manifold is best. Is that right? is there an exhaust manifold that is better than the others?

[flatlander757]

The only time the EGR will make a difference is when you are lugging the engine along at RPMS far lower than they should be(ie: going 32mph in 5th gear). When you do this you're basically putting air and fuel in there and when it burns the cylinders are moving too slowly so it has more time to heat everything before the exhaust valve opens so not as much heat is dissipated through the exhaust and more is put towards the cylinder walls. The EGR will take some exhaust and redirect it back which during this condition is cooler than the combustion chamber so will help keep temps where they should be.

/EGR in a nutshell.

[Wizard]

Actually, what I was after is info.

And remember KEEP in mind, how easily to get stuff is true for many but can not be true for others, myself included. Any thing that is really OLD will not be always there hence I had to employ few people to find parts that is unique to carbed 2.2 so I can drive it thru winter. 3 Junkyards did NOT have carb 2.2 at all but I did see few 2.6 which is strange. While driving with carb (right now it's not not that bad, had it fired up in -22C, coolant heater helps!) and save up money for megasquirt with the MPFI on 2.2, then and 2.5L DOHC hybrid stuff. (have the head waiting to get it, 2.5L tall deck engine.) This means last 10 years except for few cases and any car that had bad reputation get junked quicker than you say "oh, no way!".

I have already gotten the 95% of turbovan engine bay harness and SMEC (89)
Fuel rail, Ford EDIS module with coil pack, but no 36-1 ring and VR sensor etc. Nice friend is sending me the MPFI intake with TB.

This is surely slowly getting done but I'm used to it. I had to look for 1 year to find a hard to find chipset to fix a then whopping 200MB hd and many countless stories like that.

Cheers, Wizard

[TurboTurismo]

ok , awesome stuff guys, sorry I didn't get your point at first .nevermind the damn egr crap anymore Now do you think that they are any benefits of running the 94 sbec instead of the 90 sbec I run now as in upgrades in the pcm? also on my 90 tbi it has a temp sensor on the tb housing..if i use the 94 sbec, it doesn't have the signal for temp sensor on the tb housing as chryco stopped using them on their tb's, I imagine I could just unhook it from the tb?

Robb

[RPMurph]

if you stay with the 90 cal you might be able to tune it yourself, im not sure how much people have done with SBEC's but i know there is nothing you can do with a SBECII

[DaytonaTurbo87]

Quote:

Originally Posted by rickhmn I do have one of the older cars with the tube off the TBI to a box. I thought too that it looked a little less restrictive. That would still look real "stock" too. I plan too use that head too since it seems to flow a bit better. I think i've read that the 87 and newer intake manifold is best. Is that right? is there an exhaust manifold that is better than the others?

The G head is better flowing, but performance won't be ideal if you slap it on a 86+. The G head takes a different calibration(fuel and ignition timing curves) and it'll drop your compression ratio by around .5:1 if you bolt it onto a 86+ shortblock. For exhaust manifolds, the 94 tbi manifold is the best one. Hard to find, but it's supposed to be the best flowing. For intakes, I've heard that a carbed manifold with a tbi flange mated to it is the best flowing intake combo.

[DaytonaTurbo87]

Quote:

Originally Posted by Robb ok , awesome stuff guys, sorry I didn't get your point at first .nevermind the damn egr crap anymore Now do you think that they are any benefits of running the 94 sbec instead of the 90 sbec I run now as in upgrades in the pcm? also on my 90 tbi it has a temp sensor on the tb housing..if i use the 94 sbec, it doesn't have the signal for temp sensor on the tb housing as chryco stopped using them on their tb's, I imagine I could just unhook it from the tb? Robb

I'd try the 94. I don't know if it's any better but it would have given the boys at chrysler a few years to update the software. I'd not worry about touching the temp sensor.

[tb007]

the egr lowers combustion temps under the 2500 degrees so NOX arent created... it's for emissions, and is only used at steady cruise with low load on the engine. it shouldnt hurt anything at all.. unless it is stuck open, then it will decrease performance.

[TurboTurismo]

I have the 94 intake.The damn thing has a different flange than the 90 tb , this is what chryco told me as far as the 94 pcm, chrysler told me their was only one part number that year a/t and m/t and the california cars have egr and had to have a flash done to enable an egr solenoid and a vary of other changes..they also told me that the 94 pcm has more idle capability and Will retard timing during cruise without egr to save as he said the engine. this Im not too sure I'd believe. I think the tech was pissed I even gave him my idea to do the swap out..in the end he said I was an idiot to do this with hardly no gain to be had other than maybe have a cleaner engine. In my opinion, I believe you guys because my 82 charger 2.2 did not even have egr or cat, just an air pump and I dumped that thing right in the bin..That car screamed for its 84 hp 2.2 mill .never heard this so called ping..the exaust sure did stink tho..lol

Robb

[joker5k1]

Sorry to resurrect an old thread, but I was reading a thread about hood scoops in the exterior mod section. (91 hoodscoup) There was a lot of debate over whether the hood scoop would pressurize the engine bay. One of the other things they brought up was cowl induction, which I never fully understood until I read the thread. Since we already have a "cowl" area where the washer fluid reservoir is would cutting a hole behind the TB and creating a funnel of sorts act the same way. It was one of those ideas I got while working in the shop a moment ago. It's a shame I don't have the time to test it out right now. I guess let's find out what people think about this and go from there.

-Joe

[phantomrt]

the scoop will not pressurize the engine bay if it is hooked up to the engine. Leave it unhooked and yea, that air is going to fill the engine bay instead of feed the engine, making the scoop largely for looks only.

[DaytonaTurbo87]

I didn't read the thread, but you'd need a VERY big/efficient scoop to pressurize the engine bay. There's about a 1" tall section of air above the hood of your car where air does not flow much. The guys in the V8 mopar world have told me that you need a scoop that's higher than that because the grabbing area of the scoop has to reach over top of this area of very slow moving air that's directly above the car's body panels, when you're at speed of course. You're not flowing enough air to pressurize the engine bay unless you have a ridiculously big drag race scoop and you're going very fast.

And have you noticed that when you're on the highway, even if you have your blower fan turned off, you still get airflow through your vents? That's cause of cowl induction, so yeah even without a nice cowl scoop there is still an area of pressurized air where the hood meets the windshield. Only problem is you need to do some chopping to your car to pipe the air down to the TB. I still don't think you'd see any performance gain from that though.

[joker5k1]

That works, it was just an idea that popped up one day. Trust me, I'm not going to contend the idea that a scoop can pressurize your bay. I do think it's a little unrealistic that like you said, anything short or a scoop the size of a parachute could do it though. To admit to my ignorance before reading that thread I always though the idea of the cowl was just to let excess heat escape. I can see your point about there not being a whole lot of gain from it, but I figured I would ask anyway just to see if anyone more in the know than i would have an opinion. I may still try it just for S&G's but it's doubtful. Thanks for bearing with me.

-Joe

[ZoskalonMPI]

It would take some work, but wouldn't this be one of the best ways to get cold (and maybe pressurized air?) into the intake?

http://www.pbase.com/rmscott/sixpackdan&page=1

The air box on the R/T is right in the place of the TBI air box, all you'd need to do, is redo the box. And by redo, I mean make one pretty much from scratch. I'm sure you can frankenstein the box using air boxes from junkyards, but I think that's the best bet, no? And you can add a very visually appealing scoop to your hood that's actually practical.