Raceproved Preoiler

Raceproved Preoiler

Author
Discussion

twinreal

Original Poster:

300 posts

154 months

Tuesday 16th September 2014
quotequote all
I wonder if there are many of you out there having the raceproved preoiler installed.
Does anyone ever unplugged the hose from the cam cover and then started ?
I have, and --> nothing !! No oil is getting pumped at all !
Then took off the hose that goes to the filter and no oil, too. So i think the pump is dead.
It is an Jabsco/Flojet Triplex diaphragma pump type. The max. working temperature of these pumps is 60 degrees C ! So no wonder the pump went...
Maybe take a look at yours.

Thomas

m4tti

5,426 posts

154 months

Tuesday 16th September 2014
quotequote all

clive f

7,250 posts

232 months

Tuesday 16th September 2014
quotequote all
just remove the pre oiler pump, then take the feed to the small filter housing and fit this to the oil cooler output, you`ll need a suitable fitting from somewhere like merlin motorports, that way you`ll have an extra oil feed to the tops of the cams when the engine is running.

the oil reaches the cams within 2 seconds of turning over the engine anyway so personally I don't think the pre oiler pump is of any added benefit to be honest.

twinreal

Original Poster:

300 posts

154 months

Tuesday 16th September 2014
quotequote all
I know the preoiler is an often discussed expensive piece of thing. Personally i wouldn't have put it in, but the former owner did. This should be just a quick info for those who believe in the function of the preoiler :-)

Clive, isn't this too much oil pressure for the spray bar inside the cover ?
Before buying a new pump i will throw out all except the cover....

m4tti

5,426 posts

154 months

Tuesday 16th September 2014
quotequote all
Tvr tried something a little less sophisticated by adding fins to the interior of the cam covers in the later cars to drop the oil flicked up onto the cam cover back down onto the cams.... the earlier engines had smooth cam cover interiors.

clive f

7,250 posts

232 months

Tuesday 16th September 2014
quotequote all
I`ve been running mine in this way for 3 years now and no problems, I love the cam cover but not the pre oiler kit that came with it, so I thought I`d keep the small filter and plumbed the feed into the cooler output and it works fine.

Don1

15,936 posts

207 months

Tuesday 16th September 2014
quotequote all
Maybe buckets are the answer... :innocent face:

Pursyluv

1,927 posts

173 months

Tuesday 16th September 2014
quotequote all
Fabulous addition to any Speed 6 engine, well worth £1,300

twinreal

Original Poster:

300 posts

154 months

Wednesday 17th September 2014
quotequote all
Clive, i will give that a try. Just to my understanding:
Removing the pump and the feed from oiltank to pump is clear so far, but what about the 4 way adapter ? At the moment the 4 feeds are going to:
1. Raceproved pump
2. Engine block
3. Oilcooler
4. Feed to the cam cover
So the cam cover is already connected to the oilcooler, isn't it ?

Thanks,
Thomas


clive f

7,250 posts

232 months

Wednesday 17th September 2014
quotequote all
to be honest I cant remember the pipe routing on the pre oiler pump, but if you remove the pump and the feed to the pump, where ever that came from, and the cam cover is still connected to the cooler then fine.
I thought that the cam cover was connected to the pre oiler pump, so if you remove the pump then you need to feed the cover from elsewhere.

twinreal

Original Poster:

300 posts

154 months

Wednesday 17th September 2014
quotequote all
Originally the oilway with preoiler is from the bottom of oiltank to the preoiler pump - from the pump to the 4-way adapter. From there one feed goes into the block, one goes to the oil cooler and one goes to the oil filter housing. Finally from there a feed to the cam cover.

clive f

7,250 posts

232 months

Wednesday 17th September 2014
quotequote all
sounds like if you decide to ditch the pump then revert back to the standard oil pipe set up, then run a feed to cam cover

alex_gray255

6,313 posts

204 months

Wednesday 17th September 2014
quotequote all
clive f said:
I`ve been running mine in this way for 3 years now and no problems, I love the cam cover but not the pre oiler kit that came with it, so I thought I`d keep the small filter and plumbed the feed into the cooler output and it works fine.
I love the cam cover as well. Not as bulky as the original.

twinreal

Original Poster:

300 posts

154 months

Wednesday 17th September 2014
quotequote all
Yes, love the cam cover, too. The spark plug cover is much better then original.
I think i will leave all as it is and just put back together the bulkhead connector in the drivers footwell so that the preoiler ECU is disabled.

wobbly bob

4 posts

108 months

Tuesday 28th March 2023
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hi i found out that the raceproved pump had the inlet and outlet pipe work the wrong way round [fitted at raceproved].

dvs_dave

8,581 posts

224 months

Tuesday 16th May 2023
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Lack of lubrication to the top end isn’t the issue. TVR themselves supposedly ran a test rig with the valve gear submerged in oil to test the lack of lubrication theory and it made no difference.

Incorrect/mismatched material hardness of the cams and finger followers is the problem, along with soft valve stem seals. This and a few other tweaks/upgrades are what the rebuilds fix.

Classic Chim

12,424 posts

148 months

Tuesday 16th May 2023
quotequote all
dvs_dave said:
Lack of lubrication to the top end isn’t the issue. TVR themselves supposedly ran a test rig with the valve gear submerged in oil to test the lack of lubrication theory and it made no difference.

Incorrect/mismatched material hardness of the cams and finger followers is the problem, along with soft valve stem seals. This and a few other tweaks/upgrades are what the rebuilds fix.
I’ve always wanted to know this and thanks for making it clear and simple.
What other tweaks/ upgrades are we talking about here as I’m often asked about the engine so it would be good to pass on good advice regarding rebuilt units.

glow worm

5,799 posts

226 months

Tuesday 16th May 2023
quotequote all
Later TVR cam covers have ridges on the inside over the cams , so that oil drips on them .
PS Just noticed M4TTI said this 9 years ago smile

Edited by glow worm on Tuesday 16th May 10:26

wobbly bob

4 posts

108 months

Friday 22nd December 2023
quotequote all
my pump had the in pump out put crossed


wobbly bob

4 posts

108 months

Friday 22nd December 2023
quotequote all
my pump had the in pump out put crossed