Ahh, I didn't know there was a desire to work with the Ford computes. I've alway been a fan of the Megasquirt DIY EFI system, I've also played with Accels computer with much luck.

As far as using the EFI manifold, I guess I never looked into it simply because it looked restricting. I'll have to pull one from the bonepile for a second look.

Forced induction makes breathing through the "straw" easier in my mind. Simply because air is being forced down the hole instead of sucked naturally. Hence the reason raddical cams are not needed and huge valves.

Just my thoughts on the matter, by no means am I a pro. lol

 

Nor am I a pro. I'm looking at it this way, if you have a clean flow thru the head you can use less boost for the same power output and potentially not need a BOV. And if your using a MAF system a BOV can be a problem for the computer, unless the computer can account for the dump.

 

True, cleaning the intake up is always a plus. I'll never argue that. I was just stating that you can get away running a lot less efficient designs.

There are aftermarket ECUs that can control the BOV and account for it in the programing. I for one, don't really believe in them *shrugs*.

Plus they are noisy and a dead give away to what you could possibly have

 

my bro is putting a new engine in his car...he is buying a turbocharged stock engine and upgrading it completely before the swap. he doesn't want the stock turbo because it isn't powerful enough for his taste so he is doubling the power output with the new one. i just found out two days ago that i get the brand new stock turbo for free. i think i puts out 8 lbs boost...if i tune it all right, is this enough for my 93 f-250 straight six? i am not in any way looking for a racer. i just want a bit more power. after a while, i will also be doing things like a mild port and polish, new cam, etc. i figured that once i get the turbo, custom up a system and go from there. what do you think?
chris

 

I have no idea what turbo you are talking about, let alone what car or engine family

Find out these details, and I'll be able to give you an idea of if the turbo would be worth putting on your straight 6. I am going to assume though, that your brother is getting a smaller displacement engine, and that the reason he is getting a bigger turbo is the one that the engine comes with is too small for its self even. So if it is only a 3L or so, it will certainly be too small for our 4.9Ls

 

4.9inline6

A turbo isn't something that can just be "slapped" on an EFI engine. First your 96 is speed density and that does not play nice with forced induction. So now your looking at changing the computer, engine wiring harness, add/change sensors to talk to the new computer......

 

it is a 93, not a 96. the engine he is getting is a mitsubishi eclipse engine...it is the 2.0l 4 cyl single overhead cam (4G63 engine). the turbo is a 14B turbo i think. i do understand that you can't just "slap on" the turbo. it has to be completely fabbed up. as time goes on and pockets get deeper, i am going to slowly do some small upgrades. a turbo is one upgrade that i would like to throw at it. i want a bit more power. i am not looking for a drag race truck, though. my thought/reasoning is that a turbo on the truck will push more air in than no turbo, no matter what size it is. if i am wrong, please correct me because i would hate to spend all that time building the system to find that it doesnt work.
i also know that you have to have the turbo system tuned properly to get it to work at the proper rpm. our engines run at such a low rpm that the turbo may not want to kick in until 3000 rpm, about when the truck will be shifting gears. my best bet would be to get a good sized turbo off of a diesel truck. the problem is i don't have the money to buy a turbo right now. the turbo my bro is getting with the engine is going to be given to me for free. i would like to put it on as soon as i can but if it is going to be a waste of time and money, of course i will wait until i have a bit more funds for a good diesel turbo. thanks for the help.
chris

 

I don't think that turbo would even be big enough to support the engine wanting air at 5000rpm sadly. For our size, you at least want a T3/4 hybrid if not a full T4.

 

That's right. The turbo needs to be the correct size for the engine. It will give you more power at low rpm, but then you reach the capacity of the turbo and then it becomes a restriction and limits your rpm.

 

i see. i was afraid of that...the restriction....well it looks like i will be turboing my honda rincon......hahaha
chris

 

I'm not really going to do it, but I thought that a twin setup, using two of the old t-bird turbos could be the hot ticket. (That along with an aftermarket efi as others have suggested.) You would get great response with the small turbos, and they are plentiful and cheap.

 

Probe and TRW have forged pistons that are affordable:
3.500 5.956 1.772 4.030 571 9.36 9.08 8.81 8.49 P2446F-030 $329
4.040 581 9.40 9.11 8.85 8.52 P2446F-040 $329
4.060 591 9.47 9.19 8.92 8.59 P2446F-060 $329
from Flatlanderracing.com

I'm in the planning stages of a turbo fuelie 4.9. I've heard that 380hp is about the limit of the block so I'm shooting for ~360. That's about 36lb/min airflow which is perfect for a 62-1 turbo (maybe ball-bearing) running 8-10lb of boost. The turbine housing will be a divided tangential with a .68 A/R. It should start to spool by 2k and hopefully will hit full by 2500-ish. I already have a maf eec from a bronco and a tweecer to tune it. I'm going to look for a late 60's early 70's big ford in hopes of finding a forged crank. Rods will probably be 6.25 sbc. I need a raise!

 

99 lincoln navigator loud popping in drive train under hard acceliration

 

99 lincoln navigator has loud popping in drive train under hard acceliration

 

piyurfoull