another road block...

[ilikebigbutts]

well i got my rebuilt head off cylinder head international and got around to measuring it...my digital caliper reads 115.47mm. I know stock is 116 mm.with the the stock size hg being 1.37mm a 2.0mm mhg would be .10 mm over sized right? i guess this is better than undersized?

Would .10mm over screw cam timing?

Also does anyone know how to measure block deck height?

 

[ilikebigbutts]

bump

 

[gaboonviper85]

not near enough to make a difference.... 0.10mm is about as thick as a piece of paper...you are good to go infact I'd say that's balls on!

 

[ilikebigbutts]

lol your right i measured a piece of paper and its .11mm haha...the question is how do i know the block is ok?measure how much th epistons stick out?

 

[gaboonviper85]

that I have no idea!! How much metal came off the deck? If it is only a few mm then I doubt its much issue..if it was only decked to clean up then I can't see them takeing off much more then .50 mm which isnt that much and I doubt that would even show on a dyno!

 

[HommerSimpson]

with the head gasket on how far till the pistons are flush with it ? Now i do not know what its is supose to be.. but aslong as it aint flush or above :} it will work

 

[ilikebigbutts]

they didnt take any off but the motor was rebuilt once before and i just wanna make sure it's not shaved.

 

[gaboonviper85]

I take it your not running a metal head gasket? If it was only rebuilt once and they used a regular head gasket then I doubt the deck was done... They may have ran a stone over it to dress it up but that wouldnt make a difference... Sounds to me like your set and kinda stressing yourself out wanting to be perfect but toyota gives ampel clearance for such things and I am sure your well within tolerance!!! Get that son of a bitch running LOL!

 

[ilikebigbutts]

yes i am using a mhg and they used a stiock hg when they rebuild it.I mite be stressing out but i do want the damn thing perfect!

the stock pistons are suppose to stick out the block a little when installed, without the gasket.if they stick out further than .012"-.020" then the block is shaved....

ok i'll just order a 2.0mm and be done with it :icon_bigg

 

[sneakypete]

ummm... i wouldnt put a mhg on without getting the head and block machined and lapped to an RA under 30. ask me how i know?

 

[ilikebigbutts]

both the block and head are surfaced to an RA of 30 :icon_bigg

 

[WhtMa71]

There is a measurement floating around on here somewhere for the block. Measured from the crank sadle to the block surface. I'll see if i can find it.

Edit: its 198.5mm stock

 

[ilikebigbutts]

There is a measurement floating around on here somewhere for the block. Measured from the crank sadle to the block surface. I'll see if i can find it.

Edit: its 198.5mm stock

thank you!now if i could find anything that big to measure with!

 

[ilikebigbutts]

ok measured block and its fine!thnk you every one!