Dead VFR 800

[liljegren]

My VFR800 motor expired from lack of oil pressure. After disassembling the motor this week, it appears that the front camchain follower has been chewed almost in half by the chain. The reason for this is that the top end of the follower was not in its place, rather off to one side. As far as I can figure out, there is no way the follower can get from the correct position to the incorrect position. This leaves me wondering whether it was installed incorrectly from new?
The oil pickup seive seems to be fouled with non metallic material, probably from the follower.
Could this lead to pressure drop, and engine expiry??
Any thoughts please...

[NinjaNanna]

I'd say yes

[racefactory]

Sorry to hear about the motor. Didn't the oil light come on???

[kiwi cowboy]

Sorry to hear about the motor. Didn't the oil light come on???

By the time you see the oil light its alredy too late most times.

[Motu]

$1 reserve - I'll start the bidding.

[AllanB]

Evil man.

You killed a Honda!

[dangerous]

naaaa, ya cant keep a good Honda down... it will be carrying a nice person around again befor you know it.

One of my CX's the oil light was on at idle after it was repaired after a crash for 2000k before it rattled to a stop, LOL cam was melted, but I rebuilt it bigger better stronger and once went from Nelson to Chch with no water due to a pump seal failer, nedle stayed in the red the hole time... I figgered the sooner I get home the better so sat at the ton the hole trip... warped rear casing was the only damage

[liljegren]

Sorry to hear about the motor. Didn't the oil light come on???

Well yes the oil light came on, and after checking the oil level etc, I rode on gently, having convinced myself that the sender was faulty(or something)!!! No bad noises, no leaks, oil level normal. Twenty kms later, bad noises etc. I've since sourced and fitted a new (used) motor ex Oz, all good. What I'm chasing now is the reason for the pressure loss. And yes, I killed a VFR!!!!

[racefactory]

damn that's sad man. What is the damage to the motor exactly? Crank and piston rings shot?

[liljegren]

Damage is not fully diagnosed just yet. Trying to get a handle on the cause, especially if it turns into a factory fault. I'm not really into the blame game, but the motor hasnt been apart, the camchain tensioners are auto, so how the hell did the follower jump out of its allotted position? It's got me stuffed!!!

[kiwi cowboy]

Well yes the oil light came on, and after checking the oil level etc, I rode on gently, having convinced myself that the sender was faulty(or something)!!! No bad noises, no leaks, oil level normal. Twenty kms later, bad noises etc. I've since sourced and fitted a new (used) motor ex Oz, all good. What I'm chasing now is the reason for the pressure loss. And yes, I killed a VFR!!!!

M y guess is that the shavings you talk about on the oil gause has slowed the oil flow down to terminal flow levels so the pump might be working properly but if it cant suck the oil past said shit in gause it cant keep the oil preasure up hence the oil press light came on.

[ducatilover]

Evil man.

You killed a Honda!

'Tis a sad day....


I would say the blocked oil feed hole was the obvious answer, but, how did it get gunk in it?
I had a VT250 motor apart that had 120,000k on the clock and had welded a big end to a rod and it was super clean inside and everything was well within spec, excpet the fucked bearing, even the crank was still okay. Good old Honda motors!

[liljegren]

M y guess is that the shavings you talk about on the oil gause has slowed the oil flow down to terminal flow levels so the pump might be working properly but if it cant suck the oil past said shit in gause it cant keep the oil preasure up hence the oil press light came on.

Well Kiwi cowboy, I'm picking were on the same page. What I wanna know is, did the follower jump out of place, or was it installed incorrectly from new? The motor was at 55,000kms when it failed, so if it was like this from new, how come it took so long to wear the follower to the point of failure?

[kiwi cowboy]

Well Kiwi cowboy, I'm picking were on the same page. What I wanna know is, did the follower jump out of place, or was it installed incorrectly from new? The motor was at 55,000kms when it failed, so if it was like this from new, how come it took so long to wear the follower to the point of failure?

First question is has it had a valve clearance chech since new and if so is it possible it got shifted in the process of that service I;E has it got shim clearance that you have to undo the cams.

[liljegren]

Well the latest is that a mechanic in Waipapa reckons that the cam chain tntioner failed, allowing the chain to flap around in the slot, and then skip out of its position, and hence wear away and blind the filter.
At 55,000kms, there had been no need to remove the camchain blades, even for a valve clearance check (I think?). However, I'm wondering whether there is or should be a service interval or check for the tensioners? Anyone?