block resurfasing????

[mattmann]

Hey i was jus worndering how much u can take off a block befor it is demmed junk. Also i had my head resurafest by a shitty machinest that doesnt keep track of wat hes does therfor i dont know how much he took off....... But i do know there is still o few very, very tiny pits left none of them r touching the water jacket holes so i was curious if thed be ok.

Any imput would be greatly apriciated this motor is maken me lose more sleep than deal with

 

[tbcmorris]

you can find out hoe much he took off by measureing

 

[rayall01]

If this is the first cut for this block, and it's still got pits in it, then most likely it is still OK. To be sure though, definitely measure the block, per the TSRM specs. The pits won't effect anything, as long as they don't touch any sealing rings.

 

[mattmann]

Alright thanks alot ima go measure it now, i saw thet how to measure the block in the sticky. Any chance anyone knows the tsrm specs?

 

[jdub]

Head: 116mm from deck to cam cover seal surface

Block: 198.5mm from deck to crank bearing saddles

It's not in the TSRM...complements of IJ

 

[rayall01]

Head: 116mm from deck to cam cover seal surface

Block: 198.5mm from deck to crank bearing saddles

It's not in the TSRM...complements of IJ

I stand corrected, I always thought it was. Seemed reasonable.

 

[mattmann]

does anyone know wat kind of measuring device i should use to get the most accurate measurement for the block and head?

 

[jdub]

A vernier caliper of the appropriate dimension capacity.

 

[gaboonviper85]

A vernier caliper of the appropriate dimension capacity.

I prefer a granite test table (precision ground solid rock table for machinists), Joe blocks (precision ground metal blocks of different sizes), and a drop pin indicator...

All of which damn near every machine shop (real machine shop not motor builders) generally have!

 

[jdub]

LOL...so would I
A vernier caliper will work good enough to get a correct thickness MHG though.

 

[gaboonviper85]

Yeah it will for sure...but most normal people don't have such tools let alone even know what a vernier is....not to mention they are kind of expensive.

If anyone was to bring a head to my shop and ask if we could measure it, it wouldn't even be worth our time to charge you! We would be happy to do and send you on your way. Not only that but by taking it to a shop and measuring it with a drop pin, we can tell you how much warp and taper the head may have and the areas in which are deformed...much better than a straight edge n feeler guages!

Dunno if you can tell but I have ZERO faith in "motor" shops as most have no fucking clue how to machine and only have ruff basic idea how to use machines....industrial shops have it going on!....a local motorcycle shop has now started sending us crotch rocket heads to deck as we know how to get epic finishes (1ra)! We don't use the inserts that people here say you should use...no no we use diamond, not only are they cheaper but made just for aluminum...sometimes we have to endmill the valve seats a bit to clear the head surface as it will kill the diamond inserts.

 

[mattmann]

Man if i woulda know ur shop was only 2 and a half hours from me i woulda deffinently taken all my stuf there insted of to a "motor" builder. Cause now i have to get the block measured n machined again woo hoo im so f'n happy for another set back

 

[mattmann]

n how much does ur shope charge to fully rebuil a head n deck it?

 

[gaboonviper85]

we dont do rebuilds sorry bud.....we could deck your head but it would cost you about $300 but it would be pure sex!

my shop makes medical, aviation, and military defense parts....mostly exotic metals etc....

this is another reason why i have no faith in motor shops....your problem is a prime example of a motorbuilder who doesnt know weather to scratch his watch or wind his ass!

 

[gaboonviper85]

Man if i woulda know ur shop was only 2 and a half hours from me i woulda deffinently taken all my stuf there insted of to a "motor" builder. Cause now i have to get the block measured n machined again woo hoo im so f'n happy for another set back

hows about one shop fucking your block deck up with a 120 ra (looks like a chainsaw cut it) and then another shop doing $700 worth of work to a cracked head!!!!

trust me i know your pain!

 

[mattmann]

wow man n i thought i got screwed with a jdm motor that had grass in the head lol, yea... so much for "ready to drop in" . It also had a blown h/g and numores other broken parts. Im getten ready to start a build thread were ill post all the pics of the kayos. Aslo one more question is the tsrm says to check the crank with a micrometer for the proper diameter n all i have is a dial caliper. But its a nice as matco one do i think that would be good enough to see if my crank is good or not???

 

[mattmann]

oh yea n would u be innterested in any side work

 

[jdub]

A dial caliper is not going to cut it for the crank journals...you need to measure down to in the 10 thou accuracy range. A good (calibrated) micrometer is what you need.

 

[gaboonviper85]

A caliper isn't the correct device to measure crank pins....can it be done? Sure but only in the hands of someone who knows their tools well and knows the proper way to use them! I wouldn't trust you personally with a mic or a caliper as I dontbthink you use them on a daily basis...not only do you need to measure the pins but you need to measure runout. You can't measure run out without a precision surface and v blocks and a dial indicator.

As far as side work I do it from time to time...I machined emperas rear timing cover as it wasn't decked with the block....but emp only lives 10 min from me and I could take measurments I needed....I can't deck heads on the side here as it takes time to set up and our milling machines are full...the reason we do bike heads is cause the shop owner is friends with the bike mechanic so it's between them....I just work here:-(

I'd love to help but I can only do quick easy things as to not tie up machines that the company needs.

 

[mattmann]

i totaly understand could u check the crank on the side, if so can either pay money or help u with some of that body work u need done cause i can fix anything on the outside of a car lol, i jus wanna get this car on the road its been like 2 years since i broke it for good n im dien to feel some boost