I have had the block bored oversize and the crank upsized with "cold chrome" and am using toyota bearings with tabs worked it through with ACL Bearings in TasmaniaI think Loctite 680 and put the new bearings in the worn block.
Loctite 680 is incredible strong and can fill gaps to 0.4mm.
I've looked in the service manual and it specifically mentions this with a "Look in the SDS" for the clearances - and the SDS does NOT have these figures for the V9X. It has them for the YD25 but that's useless to you (I mean, what are the chances that they're the same between an inline-4 and a V6?).Does anyone have the main and conrod bearing clearance specifications as they are not in the manual I've got; all help is appreciated
The answer to your question may not help ... allow me to explain.Just wondering what condition your timing chain is in. I'm wondering if I should replace the chains and tensioners. My V9X has now done 245,000 km. I blocked the EGR with a blanking plate at 10,000 km after the 1st service and blowby is very very little. Better than new. I think the gritty soot wears the rings out and adds to blowby and oil contamination which then allows highly soot contaminated oil to wear the main bearings. I'm glad I blocked my EGR off as I can hold my hand over the engine oil cap and there is not much coming out.
Interesting. There maybe something in this. I blocked mine from virtually new. Just after the 1000K check. I was worried it maybe discovered under warranty. Wasn't. Now 10 years latter I have bugger all blow by. To the point I was a little worried as the catch can seems to catch bugger all oil. So disconnected the hose to the catch can and let hang down and swing in the breeze for a while (on closed roads on private property of course ;-) very little oily residue in the hose.I blocked the EGR with a blanking plate at 10,000 km after the 1st service and blowby is very very little. Better than new.
e SDS does NOT
The answer to your question may not help ... allow me to explain.
My own car has just had its head replaced. Now I haven't had a good look at the old head yet, but it's entirely possible that my head was NOT cracked, and that it was just a head gasket ... but I digress.
During the course of disassembly and inspection (we insisted that they provide and fit a brand new water pump and thermostat) they checked over everything, timing chains included. And I get a phone call.
"Hey it's the mechanic."
"Yeah, how long ago did you get this engine rebuilt? I'm guessing 20,000km or so?"
"You're kidding me? The timing chains look brand new, as do the guides, and your speedo reads 361,000km"
"You're the first to see that timing chain since the engine was assembled in Spain."
It's another reason why I couldn't understand how we cracked a head. I don't drive it hard, I don't let it overheat ... and she's regularly (and properly) serviced. Even the old water pump (the original one from factory) looks new inside.
So it's going to vary - the condition of components and their expected longevity vary greatly depending on manufacturing quality, servicing (both frequency and quality) and driving style.
My EGR was blocked off but I don't know right now, I haven't had a chance to go over that yet. I let the mechanic go over the chains and tensioners and guides, he called me and asked me how long ago I'd had a timing chain kit put in because they were nearly new. He was stunnned to discover that he was the first to lay eyes on those chains since the engine was assembled!Tony. Do you have your EGR blocked off? To check timing chain wear you need to see how far the tensioners are extended and how much travel is remaining.
Also there are two good video's on Youtube about the tV9X iming chaiins.
That russian channel has heaps of V9X videos. Just need captions turned on and translate to english.
See entire vide with auto translate to english set
See 9:06 time