Turbo 4.0 Jeep

First tests of turbo 4.0 at Fletcher Made Horsepower.

Category:

Autos & Vehicles

Tags:

• Turbo
• 4.0
• Jeep
• AMC

[TurboAMC]

LOL.. it runs like a diesel!!!

Best ET is 10.89 @ 122mph in the 1/4

In a1979 AMC Spirit

[TurboAMC]

Sorry I don't make a kit.

Just built it all myself.

With some help from good friends

[TurboAMC]

Final result ... 500 ft lbs at 4300 RPM

450 HP at 5500 RPM

13 pounds of boost on E-85

[DardeeChar]

Hey mate, just curious why the 4L thing weighs like 500lbs, good engine, but weighs a shit load, why didn't you use something else?

[TurboAMC]

Cause I am an AMC guy!!!!

[TurboAMC]

It shoved the stock 60,000 mile head gasket out at 15 lbs. And cracked 2 stock pistons. I built the header based off the stock one. Sorry, I will not be making kits or headers for sale. The engine is going in a 1979 AMC Spirit drag car. I have new forged pistons on the way. This is an on going project and I fully expected to break a few things. Shooting for 500hp with a cam change and the next test. Also going to E-85 fuel. Thanks for the interest!

[willbill808]

damn! that sounds like a fuckin detroit 6v71!

[axoneill7]

Thats sick

[Oldbmwr100rs]

@DardeeChar It IS a good engine, and very capable of lasting well over 200K miles with regular service. Yeah, it's an iron lump, a smooth torquey, somewhat economical,reliable durable iron lump though. That engine pretty much saved the Cherokee from the mediocrity it was suffering with the GM 2.5-4 or 2.6 V-6 junk it was first on the market with. It's something that AMC really got right.

[kenna4x4]

how much boost can a stock 4.0 handle?

[xxbal1inxx]

sounds like a detroit!

[cobra96svt570]

what did you have to do to make it hold up to 500trq-450hp?! Christ, I'd be happy if it made 250-275, Im gonna turbo my 4.0 xj, probally use a megasquirt for tuning. Ive had experience with turbo's and tuning with my cobra, But do you have any sugestions or tricks about the 4.0 with boost?

awsome engine!

[marcoze]

@DardeeChar using that theory, everyone should be running r/c engines.

[nxmoparmatt84]

@TurboAMC what rods are you using? you may want to consider lowering the compression either with the new pistons if possible or rod/crank, i assume your using arp head studs? have you experimented with the 258 block?

[collinblondy12]

hey man pretty interested in this do u guys have a website?

[myfagan]

help!! i am going to build one of these as i currently buy jeeps that dont run and get them back on the street. i love these and would really like to build a 4.0 to show non believers whats up. can you give me a detail on how you built this? parts, machined, turbo......? thanks

[captwass]

what did you do with the computer to increase injector pulse width in relation to boost? I was thinking of doing this but dont know where to get a computer flashed.

[09adge13]

@kovacs88 damn that really sucks i really wanted to see them power the new JKs.