budjet stroker

S

snacob14

NAXJA Forum User
Location
stl, mo
who out there has a recipe for a budjet stroker motor. i know there are a lot of guys on pirate doing this upgrade but who here has done it and for what price.
 
Made me laugh. :laugh3: Ahhh, it's Friday. Time for a long weekend. Supposed to pick up a spare 4.0 tomorrow. Ya think it will fit on my bicycle? Can't afford gas.
 
91 Jeep Project said:
I attributed the mistake in the the title to just a typo. Then I read your repsonse as well. It's "Budget," Stay in School.....
Click to expand...


young grasshopper.....it can be done.... strait from Dr. Dyno's home page....


http://www.bc4x4.com/tech/bryce/stroker/assembly.cfm

it is a 4.5...but look at what he did...this is budget stuff....and damn good write up as well.

ENJOY.
 
snacob14 said:
who out there has a recipe for a budjet stroker motor. i know there are a lot of guys on pirate doing this upgrade but who here has done it and for what price.
Click to expand...

dictionary is a good place to start...
 
is it possible to start with the renix non-HO engine and make it a stroker with the stock computer? I noticed he used a HO engine. What are the output differences between the two. Would you have to change the head and intake crap on the non-HO?
 
Dr. Dyno said:
I built my 4.6 stroker at a cost of just over $1100 but I'm in a country where labor costs are cheap. You could still build the same one for under $2000. Here it is:

http://www.angelfire.com/my/fan/stroker.html

If you don't like my stroker recipe, here's a few more:

http://www.jeep4.0performance.4mg.com/stroker.html
Click to expand...

am i the only one that caught the fact that dino's stroker kit didn't really improve that much for the price he paid? in the right-up there is a link to his "bolt-on parts." he stated that with the bolt-on parts alone he increased flywheel output to 240hp. after the install of the stroker he only gained another 15hp. did i miss the sentence where he stated that he didn't reuse any of the bolt-on parts or is this considered acceptable? i don't mean to talk bad about the kit. the research and work put into the kit is very nice. i'm even considering using his research as a blueprint for my stroker down the road. i'm really just curious if the stroker kit WITH all the bolt-on parts only gained 15hp over just the bolt-ons (no stroker).
 
Last edited:
gotmine said:
am i the only one that caught the fact that dino's stroker kit didn't really improve that much for the price he paid? in the right-up there is a link to his "bolt-on parts." he stated that with the bolt-on parts alone he increased flywheel output to 240hp. after the install of the stroker he only gained another 15hp. did i miss the sentence where he stated that he didn't reuse any of the bolt-on parts or is this considered acceptable? i don't mean to talk bad about the kit. the research and work put into the kit is very nice. i'm even considering using his research as a blueprint for my stroker down the road. i'm really just curious if the stroker kit WITH all the bolt-on parts only gained 15hp over just the bolt-ons (no stroker).
Click to expand...


How much total HP you get out of a mod is not the only thing to look for. In changing displacement, cam, head characteristics, etc, you are also changing where the engine makes that HP. I'm sure if Dino answered your above question, he would tell you that it was definitely worth it.
 
gotmine said:
am i the only one that caught the fact that dino's stroker kit didn't really improve that much for the price he paid? in the right-up there is a link to his "bolt-on parts." he stated that with the bolt-on parts alone he increased flywheel output to 240hp. after the install of the stroker he only gained another 15hp. did i miss the sentence where he stated that he didn't reuse any of the bolt-on parts or is this considered acceptable? i don't mean to talk bad about the kit. the research and work put into the kit is very nice. i'm even considering using his research as a blueprint for my stroker down the road. i'm really just curious if the stroker kit WITH all the bolt-on parts only gained 15hp over just the bolt-ons (no stroker).
Click to expand...

I think you might have misread what I wrote on my site.
My old 4.0 was putting out an estimated 240hp/280lbft with all the bolt on performance mods, home ported head, 9.07:1 CR, and stock cam. My stroker is now putting out an estimated 265hp/325lbft, a gain of 25hp/45lbft. I reused ALL of the bolt on parts on the stroker. The only part that I changed later on was the TB; I went from a 62mm bored Jeep TB to a Mustang 65mm TB. I even kept the same Ford 24lb injectors and just tweaked up the voltage on my MAP adjuster from 4.25v to 5.15v.
Essentially the only changes that I made to produce the extra 25hp/45lbft were the displacement increase, Crane 753905 cam, and a small increase in CR from 9.07 to 9.25:1.
Was it worth it? Hell yeah! The torque gain was immediately noticeable especially at low/medium rpm and I can hold the Jeep in a higher gear for longer. In an apples to apples comparison of performance, my Jeep has gone from a [email protected] 1/4 mile with the old 4.0 to [email protected] with the stroker.
 
Dr. Dyno said:
I think you might have misread what I wrote on my site.
My old 4.0 was putting out an estimated 240hp/280lbft with all the bolt on performance mods, home ported head, 9.07:1 CR, and stock cam. My stroker is now putting out an estimated 265hp/325lbft, a gain of 25hp/45lbft. I reused ALL of the bolt on parts on the stroker. The only part that I changed later on was the TB; I went from a 62mm bored Jeep TB to a Mustang 65mm TB. I even kept the same Ford 24lb injectors and just tweaked up the voltage on my MAP adjuster from 4.25v to 5.15v.
Essentially the only changes that I made to produce the extra 25hp/45lbft were the displacement increase, Crane 753905 cam, and a small increase in CR from 9.07 to 9.25:1.
Was it worth it? Hell yeah! The torque gain was immediately noticeable especially at low/medium rpm and I can hold the Jeep in a higher gear for longer. In an apples to apples comparison of performance, my Jeep has gone from a [email protected] 1/4 mile with the old 4.0 to [email protected] with the stroker.
Click to expand...

i appreciate you clearing that up for me. like i stated earlier i wanted to use your design to help with my stroker, but when i read that i was a little confused. then again, i wasn't really thinking about it in terms of changing the hp/tq bands to either broaden them or manipulate them to have the engine perform like you want it to. it makes sense now! got to be honest, didn't even notice the difference in torque otherwise i probably wouldn't have posted. that alone makes the stroker worth it!! thanks again
 
You must log in or register to reply here.

Similar threads

N
1986 XJ with 2.5L, 5 spd standard and 4.10 gears : Questions on auto trans conversion and more
Replies
8
Views
333
four_shot
four_shot
R
Xj dies at idle
2 3
Replies
59
Views
1K
Ryn89xj
R
M
March Membership Drive 2025
Replies
2
Views
149
MEMBERSHIP
M
old_man
Looking for fuel injector rail for Renix era 4.0L
Replies
2
Views
420
Marcass
Marcass
J
2016 F250 EGR Delete Advice Needed
Replies
1
Views
175
jameswilliam
J
Back
Top