4.0SOHC BLOWER!!! AND MORE MODS!?

[tbomb]

Originally posted by DrAgMaStA
Turbo for an X huh? This is a new 1 who has the designs for this, plus it's gotta b tested, then mass produced and for how much, any glitches? Alot of questions can be risen about a turbo but if explorer express can build a supercharger (and they suck as it is) they i guess you can design a turbo, and if it works GOD BLESS you and i'll buy the first 1!!!

a kit is not the only way to install a turbo. you can buy just the turbo unit, and deal with all the plumbing and brackets and other crap on your own. i know a number of guys who had custom turbo setups put on 2nd gen ford probes tell me thats not cool it can, and has been done.

 

[DrAgMaStA]

Very intresting, mayb 1 day if i get the extra money i'll try 2 custom fit a turbo......... Who knowz might actually turn out ok

 

[ChuckyD]

Originally posted by DrAgMaStA
I was thinking a 302 conversion, but im not rich, i could put the money into it with no problem, but is it really worth, couldnt max out at much HP?????

You shouldnt even consider a swap.. if your really itchen to get more HP sell ur X and get another one with a V8 and go nutty... many many many after market parts for you...

 

[DrAgMaStA]

I was thinking a 302 swap, but gunna b one hell of a project, probably just gunna keep the sohc and design custom parts c how it works... Hey everything is worth a try!

 

[DrAgMaStA]

I juat found a nitrous kit for the SOHC! Thinking of putting it in wit the blower i'll b getting..... NOW ? The bottle is a 75 shot witch works with all stock engines and fuel systems, i was wondering if a 100-125 would do any damage and IF it will what do i need to avoid the problem??

 

[Alec]

There are many threads on this board in which I explain how to properly set up a nitrous kit. Try using the search engine.

 

[Doug904]

Man where to start on this one...

First off I must say that both the OHV and the SOHC 4.0 do not have forged pistons, rods, or crankshafts. They are all three cast, well cast aluminum and iron.

Secondly they both share the Crankshafts and the rods, the only main difference is in the pistons where as the SOHC's are flat tops and the OHV's are dish. Both the SOHC and the OHV have a 3.9 inch bore (stock).

The SOHC will hold up to around 9psi of boost in stock form with its 9.7:1 compression ratio. Anything higher and you'll need some form of detonation supression, water/alchol injection, intercooler, high octane fuel, or timing retard.

I know this because I have been part of a couple of supercharger installations and full SOHC's build ups. These have all been in 2001 Rangers but basically exactly the same. I can't stand someone to talk and not have any proof so I will include a few pics of them.

I don't mind answering a few questions but the main thing here is we are not a large company nor do we have any time to really mass produce a kit. So I'm sorry to say that we can't sell any but I would be dellighted to help out in any other way possible.

I currently have a site under construction for 4.0 performance parts but my wife is very close to having my my first baby boy so things have kinda hit the back burner for the time being so please don't be insulted by any delay in responce time, thanks! Doug904.

SOHC pistons--

 

[DrAgMaStA]

Very intresting. For starters i really appriciate your help however little or big it may b. Now as far as a blower, i kno explorerexpress is designing a supercharger with 6psi boost, fairly low for my liking,so i'll tune it to 8-9psi. Wish there was another company in the make of the blower for the 98-up 4.0sohc but unfortunatly there isnt so i have little options. Most of the work i can do myself wit no problem but it's the machinery i lack 2 make my own parts so as far as custom work im fairly limited Now from what i do know about this engine, the stock block with NO mods can only handle a 75hp shot of NOS safely with a blower on board. Now to my knowledge i cannot find heads, pistons, connecting rods, injectors, different fuel management intake/exhaust manifold. **** if they had half the parts i have listed hea 4 this engine the vettes would b ****tin there pants lol. But again they dont, so im stuck, 1 blower, 1 nos kit each to choose from, not very many mods left, where could i possible go, money is not a problem, but machinery is wat i need. N E ideas on where i can go, what parts can be available, and how n where 2 find n e thing i need would be greatly appriciated......

 

[Klowns]

Dunno if this means anything to anyone but....Here are the custom headers, with flanges mounted on just a turbo case. *Note this is just the case, not the whole turbo, not even the turbo, just the case.*

The whole thing I hope to have done and put on by the 22'nd at the latest. Then If anyone's interested I can throw some out. Of course assuming that all goes well. Which it should.

 

[DrAgMaStA]

The headers mean something to me. These headers are part of a turbo kit? For a sohc? Just curious cuz i am intrested b/c i despreatly need headers, keep me up dated on how things go and when a price becomes available, i'll b 1 of the first to buy. Last of all how good are these headers just say compared to a JBA set of headers for a 4.0OHV?

 

[Alec]

Those headers are being custom made for his OHV turbo project. They are not for a non-turbo application. Looks like they're pretty restrictive also.

JBA ceramic coated headers are IMO the best headers for the OHV. SOHC headers will have to be custom made.

Also, unless your V6 is really built up, headers will not really help you; and may hurt you off the line.

 

[Doug904]

JBA makes a set of headers for the SOHC as well, they are very new but their around $300-$400 depending on the coating type you want. Doug904..

 

[Alec]

Well, JBA doesn't have the SOHC headers on their website yet, do you have proof that they're out?

But like I said, on our V6s headers can actually reduce low end torque at the gain of a few highway horses.

 

[Robb]

Aren't headers supposed to have equal lentgh pipes before combining? Those headers in that pic just look like a home made manifold.

Robb

 

[Doug904]

Opps sorry I didn't post a link.. here ya go

Ranger's
http://www.performancecenter.com/pr...Headers&sf1=FORD&sf2=2001&sf3=RANGER&sf4=4.0L


Explorer's
http://www.performancecenter.com/pr...aders&sf1=FORD&sf2=2001&sf3=EXPLORER&sf4=4.0L

 

[Alec]

You're right, they're there for the SOHC Explorer

Good to know, I believe this is the first time we've been pointed to that.

 

[DrAgMaStA]

The 2001 explorer sohc exhaust mainfold is the same as the 98-up, so i believe the JBA headers will fit, but like he said when we install the headers we want the accel. but im guessing they wont give use the accel. were looking for. But what about the headers with an x-pipe with no cats, or n e other ideas for improved acceleration?

 

[yob_yeknom]

Originally posted by morrisey0
Aren't headers supposed to have equal lentgh pipes before combining?

No. Equal length headers have all the pipes the same, but regular headers do not.

 

[Alec]

Except Robb is correct in that those custom turbo "headers" aren't really headers, they're a manifold. Headers have individual pipes from each cylinder that meet; manifolds have one pipe with 3 (or 4) holes in them, the cylinders share the same pipe.

Dragmasta, the reason headers tend to reduce torque is due to backpressure. These motors need a certain amount of backpressure to make torque. If the exhaust is too free you lose torque but gain hp at upper rpms. So, on a mostly stock motor the recommendation is to keep the factory manifolds and cats and just use a good muffler and tailpipe (catback).

 

[92troy92]

Turbo and Nitrous

I'm really new to the explorer, but I have one question about turbo charging the 4.0L engine. My 92 two wheel drive automatic X shifts at about 4500 RPM (does this sound correct?). With such a low reving engine turbos seem to not make a whole lot of sense to me. With the small turbos you would need to minimize the lag I'm not sure that you would get the HP numbers that everyone is talking about wanting to acheive. Tell me if I'm wrong though.

-troy

p.s.- most nitrous companies make a universal fogger system for any FI engine. I think with these "dry" systems you can run up to 75-hp.