Interesting day for Zetec turbo tuning and the oil pump debate...UPDATE! Pump failed
02-11-2011, 01:58 PM
#43
Advanced PassionFord User
02-11-2011, 06:14 PM
#46
were the crank pulley's balanced with the crank?
i would have thought that could be an issue as the revs rise to cause flex in the nose.
crank walk could be an issue, i have noticed a bit of walk in the crank when dry, maybe this is taken up when oil is splattering about.
i'm just thankful i won't be taking mine that far, i fi had a RWD car things may have been different.
i would have thought that could be an issue as the revs rise to cause flex in the nose.
crank walk could be an issue, i have noticed a bit of walk in the crank when dry, maybe this is taken up when oil is splattering about.
i'm just thankful i won't be taking mine that far, i fi had a RWD car things may have been different.
03-11-2011, 09:32 AM
#49
Anyone who's had an oil pump break, please get in contact with me! Need to know a couple of things.
Looks like Lee will have troubles fitting a the FWD dry sump system that's being made too as he's using a Silvertop sump, so he's looking at different ways round it...
Looks like Lee will have troubles fitting a the FWD dry sump system that's being made too as he's using a Silvertop sump, so he's looking at different ways round it...
03-11-2011, 12:39 PM
#53
Advanced PassionFord User
03-11-2011, 01:49 PM
#56
Lee said he spoke to you about it yeah, he's got something sorted to make a custom one up for his car.
Did he mention what he thought about little ends? Do you happen to remember the state of your little ends in the old fucked engine?
Interesting yours was on 20mm gudgeon pins. Who else do you know killed an engine?
03-11-2011, 01:51 PM
#57
The nose flexing/crank flex is still very much the most believable theory so far.
03-11-2011, 02:14 PM
#58
Lee said he spoke to you about it yeah, he's got something sorted to make a custom one up for his car.
Did he mention what he thought about little ends? Do you happen to remember the state of your little ends in the old fucked engine?
Interesting yours was on 20mm gudgeon pins. Who else do you know killed an engine?
Did he mention what he thought about little ends? Do you happen to remember the state of your little ends in the old fucked engine?
Interesting yours was on 20mm gudgeon pins. Who else do you know killed an engine?
Mine were fine the only issue I had was the rest of it was fooked lol
I dont know of anyone that had as much damage as me, mainly just bearings and pump damage... fresh shells/pump or dry sump and away they went.
I was however in 6th gear about 140 when I realised my oil light was flickering!
03-11-2011, 03:33 PM
#62
They look fine mate, would have re-used those
Well, it seems Lee is goign dry sump now, this test did what it was supposed to; proved he needed one for the next engine. He has got a theory about little ends/gudgeon pin size being a much bigger factor than people realise, which would explain how that other Focus RS is runnign such high power.
Well, it seems Lee is goign dry sump now, this test did what it was supposed to; proved he needed one for the next engine. He has got a theory about little ends/gudgeon pin size being a much bigger factor than people realise, which would explain how that other Focus RS is runnign such high power.
03-11-2011, 03:43 PM
#63
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So what was the final outcome..
Was it the power that killed the oil pump, or the revs?
Im building a 2 litre silvertop N/A, should be 230bhp maybe higher. Was planning on setting the rev limiter to 7500rpm - is this too high?
It is bored to a 2.1 with burton forged rods, arp bolts and accralite pistons so hoping with this spec it will withstand it .. just concerned on the rev limit.
Was it the power that killed the oil pump, or the revs?
Im building a 2 litre silvertop N/A, should be 230bhp maybe higher. Was planning on setting the rev limiter to 7500rpm - is this too high?
It is bored to a 2.1 with burton forged rods, arp bolts and accralite pistons so hoping with this spec it will withstand it .. just concerned on the rev limit.
03-11-2011, 03:46 PM
#64
They look fine mate, would have re-used those
Well, it seems Lee is goign dry sump now, this test did what it was supposed to; proved he needed one for the next engine. He has got a theory about little ends/gudgeon pin size being a much bigger factor than people realise, which would explain how that other Focus RS is runnign such high power.
Well, it seems Lee is goign dry sump now, this test did what it was supposed to; proved he needed one for the next engine. He has got a theory about little ends/gudgeon pin size being a much bigger factor than people realise, which would explain how that other Focus RS is runnign such high power.
03-11-2011, 04:25 PM
#65
It's only when boost pressure is added it seems.
Yes, the Focus RS has larger gudgeon pins. Lee is rebuilding this engine using bigger pins now.
03-11-2011, 04:29 PM
#66
Revs alone do not kill pumps. Dunnell revs his Zetec engines to over 8000rpm (and more sometimes) and has never had a pump fail.
It's only when boost pressure is added it seems.
Yes, the Focus RS has larger gudgeon pins. Lee is rebuilding this engine using bigger pins now.
It's only when boost pressure is added it seems.
Yes, the Focus RS has larger gudgeon pins. Lee is rebuilding this engine using bigger pins now.
03-11-2011, 04:38 PM
#67
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What bore and stroke is he using?
Is the block height being extended?
I totally understand if he does not want to disclose this information however unless something drastic is being done it will rev like a tractor.
Is the block height being extended?
I totally understand if he does not want to disclose this information however unless something drastic is being done it will rev like a tractor.
03-11-2011, 04:49 PM
#69
Revs alone do not kill pumps. Dunnell revs his Zetec engines to over 8000rpm (and more sometimes) and has never had a pump fail.
It's only when boost pressure is added it seems.
Yes, the Focus RS has larger gudgeon pins. Lee is rebuilding this engine using bigger pins now.
It's only when boost pressure is added it seems.
Yes, the Focus RS has larger gudgeon pins. Lee is rebuilding this engine using bigger pins now.
03-11-2011, 05:50 PM
#72
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The problem only start when you add boost?
Adding 30,35,40 psi isnt going to tip the scales in the grand scheme of things.
If pcp's are too high could it not run a bit safer on the ignition?
Adding 30,35,40 psi isnt going to tip the scales in the grand scheme of things.
If pcp's are too high could it not run a bit safer on the ignition?
03-11-2011, 07:01 PM
#73
PassionFord Post Whore!!
my old zetec engine killed a pump ,that was on eagles 20mm pins reving to 7800 whole bottom end was scrap like luca's.
my last zetec was on wrc rods 22mm pins reving to 7300 never had a prob and done over 30k
new engine still has the wrc rod's but also a dry sump.
my last zetec was on wrc rods 22mm pins reving to 7300 never had a prob and done over 30k
new engine still has the wrc rod's but also a dry sump.
03-11-2011, 09:58 PM
#75
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Probably been said but surly if the pump were dying due to flex caused by.... (is it force from high pcp's this guy is saying?) then it would have to pass through a cap and would showup on as mains damage also?
Is cavitation an issue on these pumps? Is it more likly to be if they run a a certain grade of oil perhaps?
Harmonics not an issue?
More questions than answer here,lol.
Is cavitation an issue on these pumps? Is it more likly to be if they run a a certain grade of oil perhaps?
Harmonics not an issue?
More questions than answer here,lol.
