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Old 05-15-2012, 06:46 AM   #1
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whats involved in doing a stroker?

My 4.0 is all original and getting up there in age...I'm pretty sure shes loosing compression...or atleast mechanic thought so...I was asking him why I only have half a gas pedal for acceleration...from halfway to the floor...doesnt do much...sounds like it bogs down..
Anywho thinking about doing a stroker build to my jeep...about how much cash we talkin bout,parts and time also..its a DD..just trying to get an idea of time frame and budget...
getting ready to start frame and body in the next few weeks also..

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Old 05-15-2012, 07:02 AM   #2
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Old 05-15-2012, 10:21 AM   #3
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the crank from a 4.2 and some machine work. new pistons, and different fuel injectors basically
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Old 05-15-2012, 11:58 AM   #4
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a stroker is when you change the physical stroke of the pistons. this is achieved by changing the crank/rods, basically to get a longer or shorter stroke. couple that with a slight bore and you can get you a nice little 4.7L. i wish i would have done it on mine. but i was in a time / money bind when i did my rebuild. didnt have time to find the proper crank and rods
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Old 05-15-2012, 12:39 PM   #5
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Rent a compression tester from your local auto parts store before you rebuild your mmotor...it's easy to do.

Check for a clogged cat converter, too!
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Old 05-15-2012, 01:35 PM   #6
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could also check fuel pressure and/or TPS
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Old 05-15-2012, 03:30 PM   #7
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Quote:
Originally Posted by Beachcruiser View Post
Rent a compression tester from your local auto parts store before you rebuild your mmotor...it's easy to do.

Check for a clogged cat converter, too!

Agree, sounds like a clogged cat. If it was a tired motor, it would be worse from idle, though none of these have guts up top.
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Old 05-16-2012, 01:10 PM   #8
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Thanks for all your replies
My cat is old...didnt replace it when we did the muffler..
also when i did my injectors,when i released the pressure off the fuel rail,there was no hiss.it dripped a little gas but that was about it...normal?1st time doing injectors for me...on any vehicle
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Old 05-16-2012, 04:57 PM   #9
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A clogged up cat is what it sounds like to me. Low compression usually is visible from all of the smoke coming out the tail pipe. A clogged up cat is kind of like stuffing a potato up someones exhaust pipe.

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