Hi,

pink valves..........i'am a bit scary

i quote a friend:

the color is typically for engines where water gets burned like a swiched off engine with active water injection or a broken block

but possible it is just on the pic

greetz

_________________
KEEP COOL UNDER PRESSURE

street legal?.....perhaps in tschibuti

The block is scrap now any way

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sheesh

beaten with the unlucky stick then kicked in the conkers with the unlucky boot

ooof that's a mess. Sorry to see it has sustained so much damage

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JP
GT4DC Treasurer

Grey St185 RC
Silver BMW E46 M3
Multicolour yawn Honda VFR400
Silver Honda Civic Type-R

Have you checked fuel % in your old oil?
IMHO it's worth it when these things happen:
it's not the first time that I see these things caused by too much fuel contaminating oil too quickly for a wrong map, or wrong piston to cylinder clearance, or rings not installed correctly (wrong side up).

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Wolf_Tm
TM 250 enduro 2 stroke
GT-four ST205 Snowy White with selfmade 3SGTE v4.1 - [2.34kg/bhp DynoDynamics]
http://www.youtube.com/WolfTm250
http://www.facebook.com/wolf.tm

TBH i think it was either Clutch was adjusted wrong ( riding clutch ) and was causing constant pressure on thrust bearings. Or original bearings have worn over the years and possibly re installed incorrectly. Either way the thrust washers wore down and were allowed to pop out this then spun mains and in turn took out rods and bigends..

Car had not long been re mapped and afr was fine oil would have had to be like p**s water to cause that in so little miles really..

good article on thrust failures

http://www.4secondsflat.com/Thrust_bear ... lures.html

overloading mentions torque converters but in a manual box its either bad adjustement of clutch or a mega pressure clutch plate..

and one on bearing failure

http://www.kingsnortonhigh.bham.sch.uk/ ... ailure.pdf

A friend's car was mapped and lasted 1000 kms before bearings were gone.
After oil analisys, fuel was 30% the engine oil.
AFR were fine on his "commercial" wide band gauge, more over AFR gauge can NOT tell you if rings are sealing correctly.

Oil analisys costs little money, but can tell you A LOT. Imho.

_________________
Wolf_Tm
TM 250 enduro 2 stroke
GT-four ST205 Snowy White with selfmade 3SGTE v4.1 - [2.34kg/bhp DynoDynamics]
http://www.youtube.com/WolfTm250
http://www.facebook.com/wolf.tm

Agree with what your saying. @ 30% fuel contamination oil would almost be the consistancy of water so your mates car would have eaten bearings etc i suspect thrust washers would still have been fairly intact though...

In this case though thrust washers were the cause of the main damage mains / bigends went because of crank walk... Bad oil would have taken out mains / rods bearings long before the thrust so would have noticed bottom end knock first. Engine was quiet until last minute...

Having said that the engine prior to fitting new rings had terrible ring gap and blow by so damage to thrust could have been caused then by oil contamination. However mains and bigends were checked prior to re assemble and no damage. We didnt look at thrust washers though

Crank was moving laterally way before any main / bigend damage. We just didnt associate clutch pressing and stalling with trust washer failure until i did a check on crank pully movement when it dawned on me it might be the case. It literally went bang within a few miles after..

AFR were fine on dyno plot and tallied with in car. Car had perfect compression and actually made more power than ever with only modification of new rings fitted/gapped correctly....

Quick question what thrust washers where used? Dorris

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Black CS 2771

im not shore as thay were all fitedfor me the first time the engine was build so dont know if thay where toyota to ACL. ill be fitting ACL this time.

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Standard thrust washers will be fine... just make sure they are around the correct way

_________________
Kris
95 ST205 - slept for 10 years, now waking up...
Avensis
http://www.gtfours.co.uk
_______________________________________
Turbocharging - the replacement for displacement

My own personal opinion is I would take the Mr T bearings over the ACL any day. D

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Black CS 2771

Hi,

i also would go with MrTs parts, the crank drives of toyota engines are very sensitive

greetz

_________________
KEEP COOL UNDER PRESSURE

street legal?.....perhaps in tschibuti

set of new forged rods on there way £180 deliver so not to bad, and after Dug poped round to day to have a look at the pistons i can now reuse my set of pistons that that save as bit of money and for what you are all say think ill go with Mr T thurst bearings

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now that I have the new work hop built I have been doing some mods to the this plate
this is how the plate looks without he flaps in


here you can see where I have cut out and ports matched the holes

<a href="http://s521.photobucket.com/albums/w332/gt4louis/?action=view&amp;current=2011-10-01165153.jpg" target="_blank"><img src="http://i521.photobucket.com/albums/w332/gt4louis/th_2011-10-01165153.jpg" border="0" alt="Photobucket" ></a>


this is how it looks finished


next job it to port match the exhaust manifold and polish it up to help with flow and do a bit more to the inlet manifold to as you can see there is still a bit more I can do the it to help flow

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