checking my logic

[89mkthree]

PROBLEM: i have a 7mgte with a spun bearing and 100300 miles, perfect compression all around.

GOAL: to have an engine capable of holding 400-450HP

PLAN: im going to get the crank spun and replace the old bearings (main and rod) with new stockers and put in new thrust bearings. im going to replace every gasket with stockers, and put in a new stock HG with ARP head bolts (the big ???). i am also going to replace the valve seals because mine were leaking oil onto my spark plugs. im going to do the washer oil pump mod thing.

does this look good? is my logic right?

 

[Big Wang Bandit]

I cant answer the question but A+ on the posting format!:bigthumb: :bigthumb:

 

[89mkthree]

lol thanks

 

[MDCmotorsports]

Head gasket and connecting hardware a big negative on the 450hp it you want it to live.

Do all that you said with the addition of:

-New oil pump
-Arp rod bolts
-Metal head gasket
-ARP bolt or studs for head

 

[89mkthree]

would a cometic HG be good?

 

[Mr.PFloyd]

would a cometic HG be good?

yes. unless you want to be making 550+ in the future.

 

[89mkthree]

ok so now i have to get the mating surfaces machined. do i need to do the block and head or just one?

 

[ForcedTorque]

Not to be a smart ass (it is my nature), but, You do want it to seal to both, Right? That answer would be do them both.

 

[89mkthree]

ok thats what i thought, and i didnt take that as a smart ass coment so your ok. now my next question is, do you have to disassemble the head to get it machined? and also how much power can the stock HG with arp bolts hold?

 

[MDCmotorsports]

Stock headgasket and ARPs I've heard of going into the 450's but not lasting long.

The commetic head gasket will take up to and over 1000hp... ITS VERY PICKY ABOUT SMOOTH SURFACES.

You will need to have the block and head completely torn down.

 

[Mr.PFloyd]

Stock headgasket and ARPs I've heard of going into the 450's but not lasting long.

The commetic head gasket will take up to and over 1000hp... ITS VERY PICKY ABOUT SMOOTH SURFACES.

You will need to have the block and head completely torn down.

hmm so then my 400 future HP motor could last with a Sotcker until i can actually get up there hmm..

 

[MDCmotorsports]

hmm so then my 400 future HP motor could last with a Sotcker until i can actually get up there hmm..

As long as you've got good hardware and you have your fuel tuning top notch...

 

[89mkthree]

awesome, it looks like im gunna stick with the stocker for now because i wont hit that 400 mark for a good 5 months. thanks for the input guys!

 

[shaeff]

would a cometic HG be good?

yes. unless you want to be making 550+ in the future.

and where'd that info come from? where in cometic's directions or website does it say that it cannot handle that power level? i sure didn't see it anywhere. if the headgasket doesn't last, then you have a tuning, cooling, or machine work problem. a stock headgasket could be pushed to 500hp with proper tuning, although i'm sure it'd start to disform at that level, i HIGHLY doubt a cometic would...

i believe your information is wrong, sir.

-shaeff

 

[89mkthree]

well either way guys, my engine is out and my parts are on the way! so if any of you are going to the chicago meet i will see you there with the supie in tow!

 

[89mkthree]

ok so the engine is apart, and everything is really clean. the journal is not bad at all so everything is looking good. one question thoiugh, do i need to replace the con rod that had the spun bearing?

 

[MDCmotorsports]

Depends on if you have a reputable engine machine shop near you that can clean it and resize it and or machine the jornal back to roundness.

 

[89mkthree]

the journal is just discolored, i dont think its OOR.

 

[jdub]

the journal is just discolored, i dont think its OOR.

What did the bearing look like? Was it in pieces?

 

[89mkthree]

no, it was flatened all around. basically like it was squeezed really hard and some came out the sides and gave it a "[" crossection.