Trucks! Stroker build - JeepForum.com
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post #1 of 52 Old 05-03-2009, 12:11 PM Thread Starter
Diamond-x
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Trucks! Stroker build

Anyone else catch the Horesepower TV Truck! 4.6 Liter Stroker build? It's interesting how they solved the compression ratio problem by taking material from the head. The removed 3 cc worth of material from each cylinder and lowered the CR from 9.6 to 9.3.
I just completed a Stroker build, although I chose 258 crank 242 rods and KB944 pistons. They used 258 crank and rods and stock 242 pistons.

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post #2 of 52 Old 05-03-2009, 04:31 PM
mecompco
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Stock pistons would net you what, 4.2L? IIRC, you get 4.6 @ .30 over, no? Are those the new KB pistons that you use with the 4.0 rods?

'94 Cherokee Country
Engine: 4.0 HO, Sealed canister filter, 3 core CSF steel radiator, CatCo cat, Dynomax Turbo Flow muffler.
Electronics: Remote start/locks, Pioneer DEH-P7800MP w/XM, Polk Audio speakers, Garmin Nuvi 660 GPS, Cobra 148 GTL P&T w/Wilson 1000.
Suspension: Old Man Emu 3" lift+OME AAL, JKS adjustable trackbar, QDs, LCAs UCAs, A.C.O.S., DPG Offroad adjustable bumpstop plate, Daystar poly bumpstops.
Steering: Currie HD steering, C-ROK steering box reinforcement, OME stabilizer.
Armor/Recovery: T&T Custom belly skid, Mopar gas tank skid, JKS LCA mini skids, Rock Lizard Super Skink Sliders, Mopar 2" receiver, ARB Bull Bar/Ramsey REP 8.5 winch.
Drive train: D30 front axle w/Superior Chromo D30 axles & outter seals, D/S 4.56 R&P, ARB locker, Ruff Stuff cover. Ford 8.8 rear axle w/Superior Super 88 kit, Ford Motor Sports 4.56 R&P, ARB locker, SOLID cover, Russell stainless lines. Front and rear Tom Woods HD drive shafts, 242 x-fer case w/Tom Woods SYE.
Tires/Wheels: 33x10.5x15 BFG Mud Terrains on Alcoas.
Misc: Garvin Wilderness rack, Safari Snorkel, Redline Tuning hood lifts.
Awaiting installation: Autometer A pillar gauge pod, oil, water, & tranny temp guages, PIAA driving lights, Goferit tie-rod flip bushing, '95 Brake booster and M/C, M.O.R.E. Motor mounts, TnT Custom 1.5" Shackle.
Stroker Project: HO Block, '99 intake manifold, bored TB, 1" TB spacer, Dynomax Blackjack Header, Permacool electric fan.
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post #3 of 52 Old 05-03-2009, 04:44 PM
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Using stock 4.0 pistons, and a 4.2 crank will get you a 4.5L, .030 gets you 4.6L, .060 gets you 4.7L. and yes the Keith Black pistons are for use with the 4.0 rods.

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post #4 of 52 Old 05-03-2009, 04:46 PM
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what a 9.6 ratio would just need Midgrade... Personally I would have kept the higher Compression Ratio, your building a stroker for power, at about a 10 to 15 cents more per gallon your going to see less then $3 more per tank fill. I think I could by one less Mountain Due during the week to make up the little extra power the higher compression ratio would have given.

Interesting they did not get a 97+ Air intake to mate up to the new head, using the newer intake would have resulted overall flow along with not having to grind the intake down like they did.

They could have at least showed a TB bore, Thats a $0 mod.

Would like to see what they dino it at, I have been looking at doing the 4.6L stroker next summer, and wondered what kind of real world gains may be seen from it.

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1995 Jeep Sport Cherokee 4x4 with an Auto and 4.0L
B&M Transmission Cooler and Autometer Tranny Temp Gauge, Ruff Stuff Diff Cover on D30.
Taraflex 1.5" BB (rear shackle only), HD Quadratec leaf springs, RE 3.5" front springs, OME Long shocks, JKS Adjustable Track Bar from K.O.R.
Daystar Control Arm Bushings, Bushwhacker Flairs, Rhino lining along bottom trim, AGR PS pump with Cooler & Filter.
Bored TB, APN Manifold, New Downpipe, Magnaflow High Flow Cat, Flowmaster Super 44.
Dual Oil Relocation Kit running two K&N301 size filters, Autometer Digital Cobalt Oil Temp and Oil Pressure Gauge.
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post #5 of 52 Old 05-03-2009, 04:55 PM
KillerCOM
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i'm workin on building a stroker or two here soon one for myself and one for my dad's jeep. i'm doin everything machining ang assembly. 1999+ intake manifold, bored TB, edelbrock header, and Unichip.
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post #6 of 52 Old 05-03-2009, 05:37 PM
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Maybe Ryan will chime in on this thread. His screen name is "RStrucks". He was on here quite a bit when they did the last XJ build.

We'll give them some pointers on how to do it right!

Shawn
'00 TJ Sahara (RC 4" LA kit)
'06 Grand Cherokee Limited
'07 Ram 1500 quad cab

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post #7 of 52 Old 05-03-2009, 06:33 PM
98jeepxjlimited
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is it possible to bore out a 4.0L I6 to ohhh say a 4.7L , as well as adding a turbo or supercharger?
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post #8 of 52 Old 05-03-2009, 07:29 PM
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Quote:
Originally Posted by 98jeepxjlimited View Post
is it possible to bore out a 4.0L I6 to ohhh say a 4.7L , as well as adding a turbo or supercharger?
Yes but it will cost you!!!!!

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post #9 of 52 Old 05-03-2009, 08:20 PM
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At the pump and for the parts/labor. That thing would like the gas.

Shawn
'00 TJ Sahara (RC 4" LA kit)
'06 Grand Cherokee Limited
'07 Ram 1500 quad cab

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post #10 of 52 Old 05-03-2009, 08:29 PM
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You will want to run 91+ octane fuel. generally booting a motor only has a 1-2 mpg effect. With it being a jeep a lot of people see that drop when you add larger tires and a roof rack then I dont think it would be that big of a change in $$ but its going to run well over a $3K for a do it your self turbo and then over $5K for a "kit" for the 4.0L (the strait six is not an easy motor to boost)

If you need more power then then a stroked 4.6L then you are going to want to do a V8 Small Block Conv. in the end will cost you less.

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1995 Jeep Sport Cherokee 4x4 with an Auto and 4.0L
B&M Transmission Cooler and Autometer Tranny Temp Gauge, Ruff Stuff Diff Cover on D30.
Taraflex 1.5" BB (rear shackle only), HD Quadratec leaf springs, RE 3.5" front springs, OME Long shocks, JKS Adjustable Track Bar from K.O.R.
Daystar Control Arm Bushings, Bushwhacker Flairs, Rhino lining along bottom trim, AGR PS pump with Cooler & Filter.
Bored TB, APN Manifold, New Downpipe, Magnaflow High Flow Cat, Flowmaster Super 44.
Dual Oil Relocation Kit running two K&N301 size filters, Autometer Digital Cobalt Oil Temp and Oil Pressure Gauge.
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post #11 of 52 Old 05-03-2009, 09:42 PM
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Quote:
Interesting they did not get a 97+ Air intake to mate up to the new head, using the newer intake would have resulted overall flow along with not having to grind the intake down like they did.
+1

Also surprised they put 2 grand into the engine then put the stock exhaust manifold back on it.
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post #12 of 52 Old 05-03-2009, 10:37 PM
98jeepxjlimited
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how much Horsepower and torque ( estimated ) do you think i can get out of the motor boring it out to a 4.6L and twin turbo ( probably from a skyline motor because of the similar size ) or a supercharger .? can anybody send me some links on stroker kits? im just starting to research about this as it is my plan to do these modifications in about a year when im in college
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post #13 of 52 Old 05-04-2009, 09:25 AM
KillerCOM
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to get the 4.7 you have to punch out the cylinders .060". dedpending on how much boost you decide to put to it you may need to worry about about cylinder cracking. i actually want to destroke/leave it stock displacement and completely balance a 4.0L, go with a full roller valvetrain, titanium SBC valves, springs, and retainers, forged SBM rods, forged Keith Black pistons and a 40mm turbo.
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post #14 of 52 Old 05-04-2009, 01:27 PM
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i missed the show, anyone know a link to a video?


btw I miss Stacey on that show. That dude ****ing rocks
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post #15 of 52 Old 05-04-2009, 01:33 PM
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Quote:
Originally Posted by 98jeepxjlimited View Post
how much Horsepower and torque ( estimated ) do you think i can get out of the motor boring it out to a 4.6L and twin turbo ( probably from a skyline motor because of the similar size ) or a supercharger .? can anybody send me some links on stroker kits? im just starting to research about this as it is my plan to do these modifications in about a year when im in college
More expensive and less reliable than a small block conversion. Probably similiar numbers or easy to get an SBC to similiar numbers.

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