Please review and critique My Stroker recipe

[aaronmulder]

Hello, and thanks in advance for your assistance.

Last summer my son and I had a blast off-roading and we ended up in too deep of mud and hydro locked the jeep engine. Now were planning to build it "better" with a 4.6L stroker,

Stroker Build v2.xlsx

[SilverXJ]

Looks good. However you won't be running 87 octane with option #1. I would also recommend a JP Performance/ Rollmaster for the timing set. Hylift-Johnson for the lifters.

[aaronmulder]

Thanks for the info, I found the JP timing set on ebay for $104, I'll send the other once back.

With the information entered into the calculator on the board I have the following:
SCR 10.57:1
DCR 9.07:1
Quench 0.043
Intake closing angle 55

Any issues with this running the 93 octane fuel?

THanks

Aaron

[SilverXJ]

That will be fine on 93.. you might even get by on mid grade.

[aaronmulder]

Hello again all,

Now that all the machine work is complete I have a final decision on the head gasket thickness that I need some help on.

0.043" gasket will give me a SCR of 9.72:1 and quench height of 0.034"
0.051" gasket will give me a SCR of 9.57:1 and quench height of 0.042"

Which gasket would you choose and why? My goal is to have a engine that runs on pump gas.

Thanks

Aaron

[SilverXJ]

Go with the thinner gasket. The decreased quench distance should offset any problem with pre ignition.

[Russ Pottenger]

Go with the thinner gasket. The decreased quench distance should offset any problem with pre ignition.

X2,

That's why I like setting up my combinations off a 9.450
Block height with a 1.385 CD piston.

Targeting a piston to be .008 out allows for variances that could be made up with the two common choices of head gaskets.

Your piston rings are on the way.

Russ