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Old 12-21-2011, 01:03 PM
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can a ford 2.9 be made into a hot rod?

years ago, i owned a bronco II. 2.9L auto 4x4. fun little truck. unfortinatly i didnt apreciate it and distroyed it. well i have recently ran into a old friend who still has his and offered to sell it. $300. great deal. needs a fuel pump put in but he already has one. his is the same except its got a 5 speed. since then i have grown up and as some of you know learned sum of the trade. i just have never thought about building up one of the little v6's. and a 4.0-5.0 swap it out for now. lol has anyone ever played with one of these little guys?

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Old 12-21-2011, 01:29 PM
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I think the easiest and cheapest way to add some beans to it would be to adapt a late model OEM blower. Naturally-aspirated seems like a waste of time and money.
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Old 12-21-2011, 02:10 PM
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even easier would be using a turbocharger. usually you just need to flip the exhaust manifolds, weld up some pipe, route your oil, and add an FMU, you're good to 5 psi in most cases like that. It'll add about 30% more power.
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Old 12-21-2011, 02:19 PM
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you could always try this
i'm sorry but I just cant help myself
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Old 12-22-2011, 09:07 AM
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that twin blower setup is something else lol if two feed that 350, then i spose i could pull off just one on the 2.9. and iv thought bout turbo but im new to forced induction. it could be an option down the road tho. will the stock bottom end hold up to it?
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Old 12-22-2011, 09:19 AM
How fast is fast enough?
 
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Quote:
Originally Posted by robbie thoreson
that twin blower setup is something else lol if two feed that 350, then i spose i could pull off just one on the 2.9. and iv thought bout turbo but im new to forced induction. it could be an option down the road tho. will the stock bottom end hold up to it?

Most stock bottom ends can hld boost and the power it makes just fine, where yo uget into trouble is DETONATION. As long as you have a good engine tune then you'll be fine. One of the reasons I'm an EFI convert, you can easily tune your fuel and spark for boost. You can create a boost referenced power valve for a blow through carb (nothing to do with a boost referenced power valve for draw through), as well as a few options for boost timing retard for a traditional distributor but its more complicated and costly IMO.
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Old 12-22-2011, 09:51 AM
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like i said im new to this but this is a ford 2.9. mpfi, and non-m.a.f. so i dont have to worrie about power valves and theres no aftermarket support i found for reflashed maps.
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Old 12-22-2011, 10:20 AM
How fast is fast enough?
 
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Quote:
Originally Posted by robbie thoreson
like i said im new to this but this is a ford 2.9. mpfi, and non-m.a.f. so i dont have to worrie about power valves and theres no aftermarket support i found for reflashed maps.

I know guys are tired of hearing this, but ::cough:: megasquirt ::cough:: Just switching to MS and tuning it will pick you up some power and mileage- only 5-10% but every little bit helps. My power went up a lot when I switched but my old Bosch jetronic system was a POS, mileage for me went up about 35% but my results may be much better than yours.

A MS system, headers, a nice muffler, and a mild cam may be all you want/need and it can all be done for about $600 total. Those 3 things can make a HUGE difference in a car, not only in power but the way it sounds and feels.
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Old 12-22-2011, 10:41 AM
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I believe the 2.9 is the same engine family as the 4.0. It is also came in an over head cam version.
It has been said many times before, hard to beat cubic inches, except for cubic dollars.
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Old 12-22-2011, 01:07 PM
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yes it is in the same "clogone" family as the 4.0. and megasquirt? care to explain? im going to search it after this post too but i never heard of it. and yes i plan on the headers, mufflers, and that stuff. also port matching the intake, replacing the heads and full tune up. has anyone here actually put a turbo on one of these
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Old 12-25-2011, 07:54 AM
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Edelbrock used to make stock replacement heads for 2.9's as they were prone to cracking...

You will be hard pressed to make 200 HP from this engine... and it will take some $$$ to do it.

If it's what you want do for it... but you have a lot of work ahead of you.
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Old 12-25-2011, 01:23 PM
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you can usually find good v8's in the salvage yard for a couple hundred dollars. you may go through one or two to find a good one but if you are like me, you have more time than money.
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Old 12-25-2011, 04:54 PM
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I agree with the megasquirt idea. If your going to add boost don't forget to gap your rings. I've broke a few pistons that way. I had a stock 2.9 in my Ranger till my wife melted it down. The 302 was far cheaper to rebuild.

Kevin
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Old 12-30-2011, 08:33 AM
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Thanks for all the input. A 5.0 swap is out for now but who knows what the future might bring this truck. I think for noow im just gunna port match everything, new cam and exhaust. Maybe later on ill replace the heads and do a valve upgrade
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Old 12-30-2011, 02:11 PM
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Quote:
Originally Posted by robbie thoreson
I think for noow im just gunna port match everything
You may just want to leave the ports alone. Inexperienced hotrodders will generally not cut the port deeply enough and in side view, the port will look like an Anaconda that swallowed a pig. At this point where the port gets larger, the mixture flowing through there will slow down, possibly dropping some fuel out of suspension and causing tuning nightmares that can't be remedied. If you're blueprinting a racing motor and have the time and tools to cut the larger area way back into the port, fine. If not, leave them alone.
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