GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: gazareth on 21 July 2013, 16:50
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hey guys does anyone know if an agg pump on a pb engine will increase the pressure? cheers
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If it pumps more oil then there is a chance it could up the pressure, do both blocks hold the same amount of oil?
Worth checking but I would think they would fit/be ok.
I've got a Mk2 one on the shelf be good to know if its ok for my agg :grin:
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yeah both engines hold 4 litres. the thing that confusing me is that it is only the gear that are longer (36 to 30mm). they will be turning at same speed and they are same diameter so not sure really. there must have been a reason to increase the gear length. guess I could just put it on and see what happens. the mk2 pump would be fine on the agg as that never had the piston oil squirters fitted like the earlier 2e engine did. you would need to machine the pump driveshaft for crankshaft clearance though.
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Bigger meshing teeth would suggest more volume being pumped, cant see it being a problem as the engines are near identical.
May show up as tappet seal leaking or weeps from sealing areas, but you might get this if you stick on a new pb pump thats got some umpf in it
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yeah maybe. the reason is that I put new hydro lifters in the engine about a month ago and im getting that intermittent ticking of them already. well maybe 1 or 2 of them. so im thinking instead of having to fork out for oil viscosity improver every oil change I could stick in a stronger pump and run it on the common 10/40 and hopefully gain a few psi. just enough to stop the lifters bleeding down when the oil gets hot. I suppose I could try 20/50 in it as is but that grade of oil seems to be hard to find now. anyway im running it at the moment with a half litre of atf in the oil so that might clean out whatever dirt is causing the lifter to tick.
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Why not replace the pump with a new correct one if the pressure is low :smiley:
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hi I already have a good agg pump to try on it. the thing is if I fit a pump with extra capacity I wouldn't have to bother with viscosity improver. I was thinking if the agg pump gears are 36mm compared to 30mm on the pb pump then that is a 20% increase so if im getting 20psi pressure at idle then that should go up about 20% to 24psi which might just be enough to shut my lifters up. I guess there is only one way to find out.
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hi I already have a good agg pump to try on it. the thing is if I fit a pump with extra capacity I wouldn't have to bother with viscosity improver. I was thinking if the agg pump gears are 36mm compared to 30mm on the pb pump then that is a 20% increase so if im getting 20psi pressure at idle then that should go up about 20% to 24psi which might just be enough to shut my lifters up. I guess there is only one way to find out.
Well I doubt a PB will fit as the AGG is a tall block, I would pick up a brand new oil pump to suit the AGG
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Look pretty similar on etka, take it into europarts and offer it up for free :wink:
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I think the OP is still missing the point by a long way here, the standard oil pump on an AGG is more than up to the job in hand lets be honest people have turbo'd them and are still running the standard oil pump.
If your tappets are noisy then why look to up the oil pressure or use a viscosity improver (10/40 or 15/40 semi synth oil will be fine btw) at the end of the day you have low oil pressure plus knackered tappets again plain and simple.
Raising the oil pressure might seem a good idea but you end up causing more problems in the long run with gaskets letting go etc.
I think your looking at this, from completely the wrong angle, have you dropped the sump and checked the pick up guaze, it would be my first port of call.
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no offence wayne but its you that's missing the point lol. the engine is actually a 1.8 pb mk2 with a smaller pump than the agg engine. so my question is. would the larger pump off the agg engine increase the oil pressure of the pb engine? everthing else been equal. the thing is if I fit the pump and then find the pressure is a bit excessive then I can go down a grade on the oil. like from 10/40 to 5/30.
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no offence wayne but its you that's missing the point lol. the engine is actually a 1.8 pb mk2 with a smaller pump than the agg engine. so my question is. would the larger pump off the agg engine increase the oil pressure of the pb engine? everthing else been equal. the thing is if I fit the pump and then find the pressure is a bit excessive then I can go down a grade on the oil. like from 10/40 to 5/30.
I respect that but again what is the point of raising the oil pressure, if you tappets are noisy a short while after fitting them then you oil pressure is low, so it would suggest that your oil pump is worn or the pick up pipe is blocked.
A standard oil pump is more than up to the job without the need to mess about with oil grades etc.
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yeah I suppose the pump could have some wear. engine is on 105k. had the sump off and cleaned out along with oil strainer a week before I changed the tappets just to be sure there was not a trace of dirt in engine. maybe I was sold duff lifters but cant prove that in any way. so I don't fancy forking out again and having to bed another set in to the cam. and as I already have the agg pump I have nowt to lose by trying it I suppose. easy to change anyway. I don't like using oil thickener as it takes longer for the oil to circulate when engine cold.
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usally its not the pump thats the problem
if the oil pressure is low it's noramly because all the oil is buggeing off out the side of the big end and main shells because they are knackerd
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yeah I suppose there will be some wear here and there but there is not rattle from a cold start. just that annoying intermittent ticking when oil temp is up around 90ish. but I have been running it with atf in the oil for 150 miles now and it is definitely quieter. the only oil pressure specs I can find for the engine are the minimum of 2 bar at 2000rpm but no word of what a good engine should be reading. just gona run it as is until weekend then if all quiet give it an oil change and leave it at that.
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hey what does "bump" mean btw? :huh:
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hey just incase anyone is interested. the agg oil pump is a direct fit to the 1.8 pb engine. but not vice versa.
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hey just incase anyone is interested. the agg oil pump is a direct fit to the 1.8 pb engine. but not vice versa.
Good stuff, guess i need a spare agg pump now :grin:
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hey just incase anyone is interested. the agg oil pump is a direct fit to the 1.8 pb engine. but not vice versa.
Good stuff, guess i need a spare agg pump now :grin:
nah you can machine the shaft on the pb pump for crankshaft clearance. and I would assume/hope that would work out cheaper than a new pump. im sure if you know someone with a lathe you could get it done for the cost of a pint lol
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hey just incase anyone is interested. the agg oil pump is a direct fit to the 1.8 pb engine. but not vice versa.
Good stuff, guess i need a spare agg pump now :grin:
nah you can machine the shaft on the pb pump for crankshaft clearance. and I would assume/hope that would work out cheaper than a new pump. im sure if you know someone with a lathe you could get it done for the cost of a pint lol
My profession negates the need to bribe with a pint :wink: