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Old 02-09-2008, 06:51 PM
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Donor Vehicle for rat rod

Hello, I want to build a Rat Rod looking vehicle that will get 40+ MPG. I have Jeep body parts from 1949 - 1952 that I am planning to use. Some guidelines and/or tips on finding a donor vehicle would be real helpful.

I want to lower the cab on the frame so Iím thinking I need a frame that is narrower than the cab. Iím not sure what else I need to look for to find something that will fit with a minimum of retrofitting.

I can shorten or narrow the box to fit the frame. I like the look of short boxes and if I shorten the box I can cut out some rust through.

I am planning to leave the front clip off and add a grill from a different and as of yet, unknown vehicle.

Because of my MPG goal I am thinking a small car or truck with a four or six cylinder would be a good choice for the donor.

Iím not even sure I know enough to give all the information that you need to answer this question. Please let me know if I can help with more info.

Recommendations for books, DVDs and/or Web sites would also be helpful.

Thanks in advance.
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Old 02-10-2008, 05:51 AM
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Get a tape measure...measure what you got...then go measure some donor stuff untill you find the width etc. that you need to work with what you have.
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Old 02-10-2008, 06:00 AM
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It sounds like you want to build a Suzuki Samarai that gets 4o mpg. Start looking for engine/trans combos that will work for this project, maybe a wrecked VW Rabbit diesel, take it from there.
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Old 02-10-2008, 06:08 AM
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The Jeep cab will add too much wind resistance to get 40mpg even with a 10 horse Briggs

Suzuki really is very underpowered. Rabbit diesel is OK. Quad 4 with computer would be good.
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Old 02-10-2008, 07:27 AM
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Cummins 4BT

Shane
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Old 02-10-2008, 09:14 AM
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I think you are asking a bit much for 40 mpg, but you never know..

Check the Toyota land cruiser that I saw in the Toyota display at the SF rod and custom show this year...







Later, mikey
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Old 02-10-2008, 09:48 AM
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http://www.ifsja.org/forums/vb/archi...p/t-54096.html

Shane
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Old 02-10-2008, 10:06 AM
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You really want someone to put one of those little diesel motors in anything...

IMO, a flat fender jeep is a poor place to put one, the hood height is too short, and those motors are fairly tall.

Later, mikey
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Old 02-11-2008, 08:07 AM
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I dont see why putting a 4BT in one of those is not the best option in the world? They have enough power and get great mileage.
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Old 02-11-2008, 08:48 AM
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Why?

On all of the websites that I've visited that are devoted to that 4bt motor and all of the cars that people put them in, I don't see any milage claims of more than 30mpg. And I only see them being put in 4WD SUV's and pickups ...Do you think the height is an issue? Hmmm.


I had the opportunity to put one of those in a COE truck, but went with a 5.0 motor instead, because of the height and width of the turbo was going to get in the cab too much.

I'd put any little gas motor in a rat rod before a diesel motor any day. It will most definately fit what the op wants to do, did anyone notice that he wants to channel the body over the frame?

Having a 32" tall motor sticking up over the cowl will look like a cartoon. Not to mention that the 4bt is ugly.

The 4 bt weighs 700 pounds, is 27 " wide and 28" long.

A small 4 cyl or v6 is considerably less than that, and the high revs and quick throttle response of the gas motor would be much more fun in a light car.


Horsepower is fun in a car, torque is fun in a truck.

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Old 02-11-2008, 08:53 AM
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I dont see why putting a 4BT in one of those is not the best option in the world? They have enough power and get great mileage.
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Old 02-11-2008, 09:23 AM
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Quote:
Originally Posted by Strictly Gravy
I dont see why putting a 4BT in one of those is not the best option in the world? They have enough power and get great mileage.
Nice duplicate post.

You could not address any of the several reasons I gave in my response to your first post as to why the 4bt was not, IMO, a good choice for a light car with a low cowl.

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Old 02-11-2008, 10:29 AM
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Quote:
Originally Posted by powerrodsmike
Nice duplicate post.
Sorry, we were having issues here with our internet.

I dont know what you are going to get that makes power and gets 40mpg. So a 4bt wont get 40mpg, maybe 30, but will also have about 250 whp and 500wtq. I dont see any other vehicles getting that much power with that good of fuel economy.

With regards to them being 'ugly' I think the mechanical look of a 4bt is hot, and isnt that what a rat rod is? form follows function. So you think a blower standing taller than 32" is ugly?

I came from the world of vw's, and have driven quite a few early 2000's VW TDI motors. They were modified with about 150 hp and aropund 300 tq, all to the ground, and were great in that light car. People seem to think that diesels arent fun to drive, but in fact, I drive a 2000 cummins 6bt daily with an edge box and a built tranny and I dont think of any other vehicle I could want to drive daily. So what if they dont rev, they are geared to not have to worry about it. With my 3.55's and the 4 speed, I am basically in my sweet spot at all cruising speeds.

Lastly, going back to the tq is only fun in trucks, I once again have to disagree. I had a vw corrado with a stroked 2.0l, 9:1 compression, and a blower putting out about 19 psi. It peaked on the dyno at 190 hp and 245 tq, basically from 2000rpm to 5500 rpm. The thing came in at 2400lbs(track car) and was a blast. Trust me, tq is just as fun on any car.

-Greg
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Old 02-11-2008, 11:10 AM
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Just for stuff and giggles how bout a 2.0 liter motor from a Ford Focus..they are in the yards now and I can tell you that it makes a fun car and mine gets about 34-35 on the road..that DOHC looks good as well and there are a good supply of speed parts for it and it it should fit in a flat fender jeep fairly well..

Trust me it makes a good performing car in something lite weight and the lite weight part is what is necessary to good performance and mileage..

Just for info sake..

Sam
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Old 02-12-2008, 07:51 AM
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Z22?

Does anyone have any thoughts on a Z22 motor from a 1982 Nissan/Toyota 720. I found a potential donor vehicle with a rusty body for cheap.

Thanks for all of the help and info.
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