I bought this block used, the previous owner said it was perfect. He had everything done by benson them selves. I was in the process of tuning the car, fueling was rich and timing was nice and safe. After 3 wot pulls one of the rods put a whole through the block. And the rods are pauter...



Any ideas to why this could have happened, im just really gutted to loose so much money

 

Call me crazy, but it looks like you lost your rod bolt there - doesn't look like a block failure. Any idea on where the rod bolts went and how they look?

 

Is it sleeved? if so it's going to be stamped with their logo.

Really sucks, I doubt it has anything to do with Benson.

I say the previous owner must of over revved it and the bolt got lose and well, you know.

 

that has nothing to do with bensons if a rod comes apart its going through a sleeve especially at wot and looks like it just snapped the rod bolts from either overrevving or over torqued

 

Can't blame a thrown rod on a sleeved block

 

did benson just sleeve the motor, or do you mean laskey racing built the entire block? not that it matters all too much it was likely due to other reasons.

 

wow someone fu@#ed on torque specs on rods...

 

Yes its benson stamped block, fully built by them.

I asked the previous owner if he had touched anything internally and he said he never even took the sump off. I also asked if he over revved the engine ie went in to wrong gear or something and he said nothing like that happened. But then anyone could lie..

 

yea its a chance you take buying used parts.. what did you pay for it? are the other rods good? maybe cold use them in the next build and just buy the one bad rod.. and a new block.. could you get the sleeves removed for another block? im not sure if its possible or even be cheaper..but i thought benson stamp even their sleeved block that they sleeved aswell(not ones they just build)? not sure.. but that's who im going to have sleeve and build it, ive heard nothing but good about them...

 

I payed £2500 which is prob $5500 it came with an itr head and good clutch. Ive not bother to open up the bottom end, kind of got fed up. But I believe I have 3 good pistons and rods for the next build. I doubt the sleeves could be re-use, the rod went through that iswell

 

Benson will re sleeve the block for you at a decent price since it already has his sleeves. Not sure where you are located, but let me know if you need to know where to send it. He is kinda local to me.

 

Re sleeving won't help, thats a nice size hole in the side of the block.

 

That sucks

 

if that is the only hole in the block it should be weldable.. It is usualy damage under the sleeve when a rod snaps and that is not usualy worth fixing.. Have the valves checked so the are not bent..

I have had bad experiances with the arp 2000 bolt.. I have sence used arp L19 or 625 series that can take alot more..

 

Im at work and pics don't work for me.

 

I sure as hell hope your joking

 

the block can be welded as long as its not on an oil galley or anything with alot of pressure it should hold fine. depending on how much it would cost to get resleeved and if just one sleeve can be replaced if you are looking at resleeving the whole block i would find a different core as bare blocks dont cost much but i have had a block cracked by behind the dipstick where the coolant is and it was welded and held up fine. and a buddy of mine had a GE sleeved block that was damaged in the front from a collision and it was jb welded and has held up great. just depends how much you are looking at fixing that sleeve to see if its worth trying to repair that block.

 

Seen worse than that welded. In fact benson sleeved H22 block that threw a rod worse than that is getting welded NOW and will be making 6+ again

 

The fact he quoted the price he paid in pounds sterling would suggest he's located in the UK.
Getting Benson to undertake the re engineering will be difficult enough, then couple that with shipping cost and import duties it escalates quickly.
Picking up a bare GSR block isn't as easy or cheap in the UK, equally finding a reputable company to sleeve is hit an miss, plus we pay a heck of a lot more than you would in the US.
To my mind that bottom end needs pulling down and every component requires measurement and replacement as its already proven to be potentially unreliable.
If it were me, I would look at finding a UK based engineering company that could guarantee their work and have a set of mid sleeves installed in another block or IF the one in the picture can be salvaged have that re sleeved.
Alternatives, scrap the engine and buy built unit from a US tuner, at least you'll have some come back.