A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

[Toymex]

Re: A race bmw 316, now S14 powered again!

Could it be something as simple as a dodgy/blocked oil filter Graham

[rwd2ltrfiesta]

Re: A race bmw 316, now S14 powered again!

that an arf look like a hard core racer now at that stance

fingers crossed 4 ya mate

[Graham]

Re: A race bmw 316, now S14 powered again!

Good write up Graham,its a shame the ride height changes didnt work out but im sure you will sort it

i think the ride height changes will work given more work, tbh i only just made the season and im close to throwing in the towel already as when i add up what i really need to spend to make everything good and proper its just not going to happen not this side of 2020 anyway!

[Graham]

Re: A race bmw 316, now S14 powered again!

Could it be something as simple as a dodgy/blocked oil filter Graham

doubt it TBH, the filters only been on there a couple of meetings and they dont clog so fast as to notice a pressure difference between the two races,

the trouble is entering races or even test/track days is a dammed expensive way to find out if you have cured a problem or not

[Graham]

Re: A race bmw 316, now S14 powered again!

that an arf look like a hard core racer now at that stance

fingers crossed 4 ya mate

cheers shame it didnt work!

[Roadsport]

Re: A race bmw 316, now S14 powered again!

Could the PRV be acting up?

[Toymex]

Re: A race bmw 316, now S14 powered again!

Graham do you think you would be able to tweak the suspension at Arena Essex not ideal i know but is a very cheap way to try a few things ,if not totally solving the problems it may point you in the right direction?

doubt it TBH, the filters only been on there a couple of meetings and they dont clog so fast as to notice a pressure difference between the two races,

the trouble is entering races or even test/track days is a dammed expensive way to find out if you have cured a problem or not

[Graham]

Re: A race bmw 316, now S14 powered again!

Could the PRV be acting up?

dont think so, but its possible, between races i did adjust it to increase the pressure, on cold oil in the paddock it made more pressure, i've just pulled the scavenge pipes from the sump, one in particular has a lot of crap all over it, they were cleaned when i replaced the sump gasket mid season last year, the crap is worrying as some of its fairly large metalic pieces

the sump deffo has to come off now

[Graham]

Re: A race bmw 316, now S14 powered again!

Graham do you think you would be able to tweak the suspension at Arena Essex not ideal i know but is a very cheap way to try a few things ,if not totally solving the problems it may point you in the right direction?

dunno mate, i've never even been there

[Roadsport]

Re: A race bmw 316, now S14 powered again!

dont think so, but its possible, between races i did adjust it to increase the pressure, on cold oil in the paddock it made more pressure, i've just pulled the scavenge pipes from the sump, one in particular has a lot of crap all over it, they were cleaned when i replaced the sump gasket mid season last year, the crap is worrying as some of its fairly large metalic pieces

the sump deffo has to come off now

Oh shoot. Was it magnetic? But you are on to something here and don't need to ponder anymore wether to open up the sump or not. Atleast there were no knocking sound so the crank should be safe.

[caprimentle]

Re: A race bmw 316, now S14 powered again!

great write up fella, makes for good reading , i hope your oil pressure issue isn't too much of an issue and that you imagined those large metal pieces in the oil

[Graham]

Re: A race bmw 316, now S14 powered again!

that you imagined those large metal pieces in the oil

if only! i held a magnetic stick close to them and they jumped onto it! there were also hard but non metalic bits too
maybe the timing chain has sawn through something, although mechanically the engine sounds spot on

[stephen bahr]

Re: A race bmw 316, now S14 powered again!

could it possibly be the bits of metal as the cause of the pressure drop as opposed to an affect of? At higher revs as you say, the pressure was dropping, also changing very slowly after you gave the throttle a poke. I'm still certain its the engine strangling itself, as it tries to draw more oil at higher revs, increasing the strength of the vacuum, potentially to the extent of starting to pick things up and clog arteries.

EDIT: By dropping slowly i'm referring to driving up to the collection area, he gave the throttle a jab, the revs hit around 6k, we then continued to pootle up to the collection area, with the pressure rising back to a reasonable level with no revs, but the pressure was rising very slowly, and it took around 30 seconds for the pressure to stop crawling up.

[team_zi]

Re: A race bmw 316, now S14 powered again!

Dodgy oil pressure gauge or sender/electrics poss?

[robt100]

Re: A race bmw 316, now S14 powered again!

On the suspension side of things (though im sure youve checked this!) Have you re-calculated the lowering effect on the rest of the geometry (caster, scrub radius etc) as this might be causing a few issues?