s2kimatt

Hello Everyone.... Welcome to my sob-story

I recently bought an 52 Plate S2K with a lot of my savings. The history of the motor was great; FSH with Honda, reliable history of the motor and only 2 owners. Also 75k so not too bad mileage. However just 150 miles later, I broke down - very long story short (including a transport company who dropped my car off the back of their truck and smashed the bumper up and claiming its not their fault) a friend helped be diagnose the rod knock.

We took off the sump and found the spun bearing on cylinder 4, but the crank clamp bolt on the main end bearing was completely loose on one side.
Any ideas is this is usually caused as a result of the bearing failing or is it (as my friend believes) the bolt was potentially never torqued perfectly?
Just to note this fault didn't happen gradually overtime, the bearing seemed to fail immediately.

I am just in the middle of finding out whether it's worth repairing or rebuilding - all the other bearings are ok and the rod is okay. we (Think) the crank is okay and might get away with just replacing the bearings and giving the entire engine a great big clean out, go through a lot of filters in the process.

some damage to rod but could be cleaned up? thoughts? will accept the cost of rebuilding if I must!


Poor engine.
Has anyone been in this predicament on here? apologies if there's quite a lot of threads on this already brand new to the forum.

Cheers!
Matt

lovegroova

See here: https://www.s2ki.com/forums/uk-irela...xtras-1185621/
and here: https://www.s2ki.com/forums/uk-irela...egend-1162841/

noodels

Could be marks on the crank,if so
.
Have a complete 04 engine<bore damage>,has a good crank rods ect if need parts ?

unclefester

Out of interest, was it under extended load for those 150 miles, did you miss a downshift? What was the engine doing at the moment of death?

150 miles after sale is either incredibly bad luck or someone knew it was on borrowed time.

s2kimatt

Unfortunately it was just cruising up north for a camping weekend. no missing shifts, I didn't really even get to have any fun in it yet! First started tapping between 3-4k, and I was revving it slightly just to try listen what the noise was. Then about 3 miles after that it cut out at about 4k 70mph. Still ran just sounded as you can imagine - Not good at all.

Just really bad luck I think. When I viewed the car there was a slight rattle but the previous owner had already ordered a new TCT and by the time I picked it up, had replaced it. At this point it sounded as good as gold and was running perfectly. I'm 99.9% sure as well due to the sellers circumstances he wouldn't have seen it coming.

Timing chain was also nicely aligned when we stripped it for diagnosis.

s2kimatt

Cheers Noodels, I'll have to see what my technical friend thinks, he's getting quite a few peoples opinions on whether attempt repair or rebuild with me being on a tight budget... but I don't want to see the engine die a couple of k down the line.

unclefester

I'd also check and inspect the oil pump / screen and also the VTEC solenoid filter - good thing you were only cruising not thrashing it under load otherwise the damage would have been beyond economic rebuild.

Daytona-Dave

The rod won't be OK, bin it, the rod bolts come loose because of the pounding from the knackered bearing if you measure the length of the bolt it will be longer than one of a good rod, the crank will need checking with a micrometer as the bearings are very specific to each journal, in reality it can be rebuilt but you need to check everything is within Honda spec

noodels

Had the sump been of before ?

starchland

That crank is damaged, it will eat the next bearing you put on it. Fix it properly
and save what you have left. Check the bores, hopefully they are still good assuming the engine wasn't run too long on low oil pressure. Check the head and stuff as well for oil starvation.