mr2 engine queary
Discussion
the car is a 1993 toyota mr2 2l 16v, import, i think its a rev2 but not sure. its got a claimed 88000 miles on the clock
recently did a track day and in the afternoon a rattle at high revs quickly developed i came in to investigate my dad said it was probably a big end. the oil was half full.
so could the cause be, the oil not getting through, due to hard cornering forces throwing it to the sides. are oil tank baffles used in mr2s at all or shud i just keep it full of oil in the future.
or is it just due to it been an old engine
and if i end up changing the engine to another of similar age and milage is it likely to happen again
whats the cause and how can i prevent it happening again any advice and knowledge on the subject would be appreciated cheers
recently did a track day and in the afternoon a rattle at high revs quickly developed i came in to investigate my dad said it was probably a big end. the oil was half full.
so could the cause be, the oil not getting through, due to hard cornering forces throwing it to the sides. are oil tank baffles used in mr2s at all or shud i just keep it full of oil in the future.
or is it just due to it been an old engine
and if i end up changing the engine to another of similar age and milage is it likely to happen again
whats the cause and how can i prevent it happening again any advice and knowledge on the subject would be appreciated cheers
(depending on how hard he was cornering of course)deeps said:
Really? I'd have thought doing that would cause excessive crankcase pressure and risk blowing oil seals?
If you guys say 'half way up the dipstick' for track days is a no no I'll believe you, but I'd have thought the quality of the oil would have a bigger bearing than the quantity.
The quality of the oil makes no difference when there is'nt any to be pumped around! If you guys say 'half way up the dipstick' for track days is a no no I'll believe you, but I'd have thought the quality of the oil would have a bigger bearing than the quantity.
Plus getting high oil temps in a turbo'd car is a big issue & easily done, hotter oil will more readily slosh about & cause oil surge. Was it an extended track session? you may have seen 150-160deg plus oil temps if you'd been ragging for 30 odd mins in which case oil at 160deg+ is not much of a lubricant
cptsideways said:
you may have seen 150-160deg plus oil temps if you'd been ragging for 30 odd mins in which case oil at 160deg+ is not much of a lubricant
I worry when I see 120c on track and am contemplating an oil cooler. I think organic oil starts to break down at around 110c-120c. I run synthetic anyway, but still don't like the high temps.Edited by sparkyhx on Monday 12th December 14:43
cptsideways said:
The quality of the oil makes no difference when there is'nt any to be pumped around!
Plus getting high oil temps in a turbo'd car is a big issue & easily done, hotter oil will more readily slosh about & cause oil surge. Was it an extended track session? you may have seen 150-160deg plus oil temps if you'd been ragging for 30 odd mins in which case oil at 160deg+ is not much of a lubricant
The quality of the oil makes a huge difference IMO, especially if it's sparse.Plus getting high oil temps in a turbo'd car is a big issue & easily done, hotter oil will more readily slosh about & cause oil surge. Was it an extended track session? you may have seen 150-160deg plus oil temps if you'd been ragging for 30 odd mins in which case oil at 160deg+ is not much of a lubricant
No comment on crankcase pressure? I can't believe many would risk over filling by that much.
There aren't any baffles in the MR2 sump until Rev3 onwards. Toyota added an extra oil pan and the baffles to prevent oil starvation during hard cornering.
If its big ends you'd hear it at idle too.
It is possible to change the big and main bearing shells with the engine and crank still in place, so its not the end of the world.
If its big ends you'd hear it at idle too.
It is possible to change the big and main bearing shells with the engine and crank still in place, so its not the end of the world.
Liamsaid said:
There aren't any baffles in the MR2 sump until Rev3 onwards. Toyota added an extra oil pan and the baffles to prevent oil starvation during hard cornering.
If its big ends you'd hear it at idle too.
It is possible to change the big and main bearing shells with the engine and crank still in place, so its not the end of the world.
1993 was the changeover year between Rev 2 and Rev 3 (Oct if I recall correctly).If its big ends you'd hear it at idle too.
It is possible to change the big and main bearing shells with the engine and crank still in place, so its not the end of the world.
The easiest visual exterior clues are the
- rear spoiler
- side strips (body colour on the Rev 3)
- rear light clusters/centre panel
Rev 2
http://mobile.pistonheads.com/;m=is;f=jpg;h=153;k=...
Rev 3
http://mobile.pistonheads.com/;m=is;f=jpg;h=137;k=...
Note that the light clusters/centre panel are not always a reliable indicator.
Many Rev 2 owners upgrade to Rev 3 as they are a direct swap.
Like so
http://www.modifiedcars.com/gallery/2010/Japshow_F...
(note: this car has also been smoothed with the side strips and exterior door handles removed)
I know mainly the na differences as that is what i have. There are a few more differences including the brakes, arb's, visuals like what was said and power outputs.
The rev 1 9 times out 10 have the 3fse engine after that they go to the 3gse if your talking n/a and the turbos have the 3gste....but eveyone knows that.
Oil pick ups in the sumps get clogged rather easy also, but more work on the turbo as of the oil pump in the sump bu as its just a bit of instant gasket allways put your mind at rest its been done at least once. I found tree buds n remains of a twig in mine
The arb's differ from 17mm to 19mm.
The front brakes increase from 255mm discs to 275mm the there is a 286mm setup fitted to late turbo models. The rears also increase from 263mm to 275mm.
Also unsure if its the case on the turbos, but the rev1 have 115-125bhp and the rev3 are 150ish and the rev5 to 170bhp. The rev3 have a higher lift cam as standard and a buckets under the shims in the head to cope with the extra lift. The rev3 cams can go in to rev1 head but this modification has to be done.
Visuals, imports have toberlarones on the front bumper, uk models have flush bumper strips, easy one there.
This may be no help to anyone but thought id put my 2pence in.
The rev 1 9 times out 10 have the 3fse engine after that they go to the 3gse if your talking n/a and the turbos have the 3gste....but eveyone knows that.
Oil pick ups in the sumps get clogged rather easy also, but more work on the turbo as of the oil pump in the sump bu as its just a bit of instant gasket allways put your mind at rest its been done at least once. I found tree buds n remains of a twig in mine
The arb's differ from 17mm to 19mm.
The front brakes increase from 255mm discs to 275mm the there is a 286mm setup fitted to late turbo models. The rears also increase from 263mm to 275mm.
Also unsure if its the case on the turbos, but the rev1 have 115-125bhp and the rev3 are 150ish and the rev5 to 170bhp. The rev3 have a higher lift cam as standard and a buckets under the shims in the head to cope with the extra lift. The rev3 cams can go in to rev1 head but this modification has to be done.
Visuals, imports have toberlarones on the front bumper, uk models have flush bumper strips, easy one there.
This may be no help to anyone but thought id put my 2pence in.
Edited by danjudd86 on Wednesday 14th December 14:23
danjudd86 said:
I know mainly the na differences as that is what i have. There are a few more differences including the brakes, arb's, visuals like what was said and power outputs.
The rev 1 9 times out 10 have the 3fse engine after that they go to the 3gse if your talking n/a and the turbos have the 3gste....but eveyone knows that.
Oil pick ups in the sumps get clogged rather easy also, but more work on the turbo as of the oil pump in the sump bu as its just a bit of instant gasket allways put your mind at rest its been done at least once. I found tree buds n remains of a twig in mine
The arb's differ from 17mm to 19mm.
The front brakes increase from 255mm discs to 275mm the there is a 286mm setup fitted to late turbo models. The rears also increase from 263mm to 275mm.
Also unsure if its the case on the turbos, but the rev1 have 115-125bhp and the rev3 are 150ish and the rev5 to 170bhp. The rev3 have a higher lift cam as standard and a buckets under the shims in the head to cope with the extra lift. The rev3 cams can go in to rev1 head but this modification has to be done.
Visuals, imports have toberlarones on the front bumper, uk models have flush bumper strips, easy one there.
This may be no help to anyone but thought id put my 2pence in.
old thread i know, but some of the above is not correctThe rev 1 9 times out 10 have the 3fse engine after that they go to the 3gse if your talking n/a and the turbos have the 3gste....but eveyone knows that.
Oil pick ups in the sumps get clogged rather easy also, but more work on the turbo as of the oil pump in the sump bu as its just a bit of instant gasket allways put your mind at rest its been done at least once. I found tree buds n remains of a twig in mine
The arb's differ from 17mm to 19mm.
The front brakes increase from 255mm discs to 275mm the there is a 286mm setup fitted to late turbo models. The rears also increase from 263mm to 275mm.
Also unsure if its the case on the turbos, but the rev1 have 115-125bhp and the rev3 are 150ish and the rev5 to 170bhp. The rev3 have a higher lift cam as standard and a buckets under the shims in the head to cope with the extra lift. The rev3 cams can go in to rev1 head but this modification has to be done.
Visuals, imports have toberlarones on the front bumper, uk models have flush bumper strips, easy one there.
This may be no help to anyone but thought id put my 2pence in.
Edited by danjudd86 on Wednesday 14th December 14:23
rev3 cars had just over 170 hp, rev4+ cars had just under 170hp due to emissions, not sure where 150hp came from but rev2 cars had 158 iirc, the toblerones is correct for early import cars but im pretty sure from rev4 onwards even imports had side repeaters as per uk cars and no tobes
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