do I really need to resurface my block.

[Untouchable7mgte]

uhh I know I know I know, im sure everyone heard this a million times but I seen and heard different things. well im putting in a HKS MHG this weekend and i can get the head resurfaced but the block is another question. I really don’t want to pull the whole engine and take it somewhere even though i know its the best way. But the supra being my only car and not having much time is against me. But could i just get the head shaved and leave the block by itself. And I know all about lapping, I went to numerous performance shops around me and when I asked about lapping they thought I was nuts. No one knew what I was talking about. So any trick of the trade or the truth and bust my ass and pull the 7m out.

Thanks for any replies.
Tom

 

[GrimJack]

A bunch of folks here swear by the permetex brake quiet spray treatment. Just spray your head gasket before putting it onto an unprepped block and pray.

 

[Untouchable7mgte]

hehe, praying i do alot of that with this car. but i mean im gonna clean the blocl as beast as i could but its cast iron so it shouldnt be too bad should it?

 

[empera]

Use 2 things...Gasket Remover and a GOOD Gasket Scrapper....should clean that surface really nicely....did the job for me. brake cleaner will help for finally touches....just keep working it with the scrapper, dont use any other scrappers cause they suck.
Make sure your block is fine, no cracks or warpage.
You should be fine.

 

[thevork]

hehe, praying i do alot of that with this car. but i mean im gonna clean the blocl as beast as i could but its cast iron so it shouldnt be too bad should it?

Resurfacing is always better imho.
Costs a little more, but while you're there you can take a look at your other internals also.

 

[Blue87T(Dan)]

Since you asked, in this case a stock HG would be much more forgiving of any problrms with the block.

I would not install the HKS in that manner myself.

 

[lagged]

do it right or do it twice.

 

[IHI-RHC7]

:withstupi
However, if you use the brake quiet,, or permatex coppercoat in a spray can, you "should" be ok.
But if your changing the headgasket because it blew, and it blew because you have a hairline crack in the block... your screwed unles you pull it have it magnafluxed, and then replaced. So I hope your block isn't cracked.

 

[Untouchable7mgte]

my headgasket did not blow it is still in good condition. I just want to get it in as soon as possible and crank the boost up because i know my stock one wont handle it.

 

[Idealsupra]

or simply return the hks mhg and get a cometic and youll have a much better chance of it sealing properly with an unprepped block.

 

[Charlie97L]

how about greddy, and just like, hand lap the block while it's in the car, and get the head taken care of elsewhere, would that work?

 

[mkIIIman089]

Cometic will be the most forgiving when it comes to bad prep. Stick with cometic.