2g 7bolt 2.3l stroker question

[mikey1990]

Hey guys I'm wondering if anyone can tell me if it is possible for me to run a 4g64 7 bolt crank in my 4g63 with my used 2.3l pistons and rod that I had for my 2.3l eagle crank that I sold, I am trying to make some use of these parts but do not want to purchase a whole new eagle crank as they are pretty expensive so any help would be appreciated thanks.

 

[sirbow2]

yes you can run a 100mm stock 4g64 crank in a 4g63 for the 2.3L but its not forged (not as strong as the eagle). Check the rod and piston specs to the ones below to be sure.

This page has all the info you need for stroker + other builds. Scroll down to 2.3L stroker. this is the important stuff:
Standard Specs:
Stroke: 100mm
Factory Bore: 85mm
Rod Length: 150mm
Wrist Pin Height: 1.130"
Displacement: 2269cc or 2.3L
Rod/Stroke Ratio: 1.50
Piston Speed @ 1,000RPM: 10.93 FPS

 

[ed1380]

You can run a 7 bolt 4g64 crank in a 7 bolt 4g63 engine with 7 bolt rods.

Twicks69 on here is in the 800-900 range on a crank out of a kia.

 

[Clever Gs-t]

The 4g64 crank and rods can be used, but the pistons can not unless they are have offset wrist pins. When increasing crank throw, you run into the issue of the piston hitting the cylinder head. That is why a piston with a relocated wrist pin is needed. All major piston manufactures make a stroker piston to be used in this type of build.

Good luck and happy building

 

[mikey1990]

ok this is what I found on my pistons, so can anyone tell me if it'll work. Also the guy who build the engine that came with the car when I got it used 3 scat rods and 1 eagle which I don't even know the spec to those rods

Summit Racing Part Number:ROS-99872



Bore (in):3.376 in.

Bore (mm):85.750mm

Piston Styleish, with four valve reliefs

Piston Material:Forged aluminum

Compression Distance (in):1.130 in.

Piston Head Volume (cc):+16.70cc

Wrist Pin Styleress-fit or floating

Pin Diameter (in):0.866 in.

Gapless:No

File Fit:Yes

Top Ring Thickness:1.5mm

Top Ring Materialuctile iron

Top Ring Facing Material:Moly

Second Ring Thickness:1.5mm

Second Ring Material:Iron

Second Ring Facing Material:Cast iron

Oil Ring Thickness:3.0mm

Oil Ring Material:Stainless steel

Oil Ring Tension:Standard

 

[ed1380]

You don't want to mix and match rods.


If the hole for the wristpin touches the oil control rings, then you have stroker pistons.

 

[sirbow2]

the stock bore for a 4g63 is 85mm, is your block bored over for the 85.75mm? and i also couldnt find anything on wrist pin height anywhere so youll have to check that first (needs to be 1.130"). and check that your rods are 150mm

 

[WES_393]

Compression Distance (in):1.130 in.

Yes, they are meant for a 4g63 block with 100mm crank and stock 150mm rods. AKA: 2.3 Stroker pistons.

 

[mikey1990]

a BIG thanks to all those who have helped and commented so I guess I found my answers