BLAAST

Most shops will do the crank line bore by milling off a few thousands of material on the mating surface of the main caps, mount them to the block, (resulting in a oval crank hole) and they re-drill it to the stock bore size with a long drill bit to make the crank line straight again. Result: crank goes up a little and compression is raised a bit... no big deal!
But i recently found out a much more worrying drawback of this techinque: it also reduces by the same amount the spacing between the gears of the oil pump. With a lowered gap between these gears, chances of a oil pump failure are increased. I did break an oil pump before with no apparent reason on my personal forged h22 with catastrophic outcome....and a few customers of mine did too. ALL SLEEVED ENGINES...
I thought oil pump failures were a weakness of the h22 oil pump but honda has no weakness. As always, our tweaking does.
MAybe that's one more reason why GE won't offer the crank line bore too much... (they know all that ---- and on'T want to scare people away)

Oh, and the proper way to crank line bore now.... dead simple. You mount the main caps on, drill larger and use oversize bearings to keep the crank where it's supposed to be.

bigdaddyvtec

Thats good to hear I was worried it was in there process... i feel better now... I would definately make sure that If my block was line bored it was done the latter of the two ways, but it SHOULDNT need it. The sleeving process itself "shouldnt" distort ---- if the mains are torqued to spec- if you get what Im tryong to say....



Thanks for the 411 man!!!!!

sikcrx89

definatly helped me out in understanding engine assembly info!!

cberman

what about benson? from what ive heard they do a killer job

sikcrx89

never looked into them but i really dont want to send my block off there is some company right here in virginia that all they do is sleeve installs and they have a 3 day turnaround but i wll have to check into them more closley.

bigdaddyvtec

Benson is good stuff...I was going to go with them for an entire shortblock, but he kept trying to sell me acl bearings and cp pistons. i waant to use oem bearings asd endyn rollerwaves.I just didnt like trying to be talked out of what my decision was. I have a number of friends making well over 600 whp on the endyns and GE sleeves... Thats why I decided to go with them... That and they do have a good warranty... 1 year.

Im not bagging on Bensons work at all... i have heard equally good things about both. benson uses a custom Darton sleeve.....
Good luck

sikcrx89

thats pretty much my set-up im going with i am going to go with the rollerwaves and som crower pro billit rods and i think i am going to with some dartons and i think it will take any and just about everything you could ever throw at it. but im not downing GE in any way but as blasst was saying they dont line bore so that really is an incomplete job if you ask me. i just dont want to pay 2 times for something that should have been done when they sleeve it. instead of xxx amount of dollars for the sleeves and the install of them and then pay another xxxx amount to finish what they started. just my .02 but if i can get it all done at once i would rather do it all at once to save time and some hard earned money.

Tom-Guy

Thank you, BLAAST!

bigdaddyvtec

Just FYI: Benson charges extra for line bore as well... I asked about it when I inquired. His base price does include install deck bore and hone i believe... iof i remember correctly. I had taklkled to him about 2 months ago, right before he got his new shop up and running in idaho.

sikcrx89

thats cool. what its starting to sound like is that regardless whoever does the install its going to be an extra cost because nobody tells you it needs to be done and they dont do it with your package.