Rb25 Sump Oil

[slr7000]

the bloke that done the conversion on my rb25det gu patrol used the sump of the old 2.8td donk that came out of it. he said he put 7.5l of oil in it cuz thats what the 2.8td donk used to take to be full and he recons this should be fine, im not so sure cuz it does even regester on the rb25s dipstick. i dont want to over fill it and have the crank sitting in oil but i also dont want it to be that low. also the lifters are very noisy at start up and takes about 4-5min of idling for the lifters to stop making so much noise

so my question is.

Without worrying what sump is on it should i still fill it untill the full mark of the dipstick?

[slr7000]

Can anyone help me here? id really like to get it sorted before i get it running again.

Thanks

[bozodos]

Probably not gonna find much help around here mate in regards to a Patrol, have you tried a 4wd forum?

I had a look in the GQ workshop manuals, but there isn't actually anything in there about oil capacity, I'm *guessing* that it would be the same since you've retained the sump, bearing in mind that you'll need to use a decent quality synthetic oil now.

Just outta interest, why not start with an RB30S motor?

[old mate]

the dip stick doesnt go any further down man. think of the sump as an attachment. just fill it till your dipstick says its correct. thats what i would do. well i would put a 25 sump on f**k buying that much oil.

[_Ryan_]

tried the 2.8 dipstick?

or get a spare sump of each, fill with water, measure, and work out the difference.

Since running a quality oil( Fuchs 10w30) i have had less noises and the motor is a lot cleaner internally.

[45ULT]

wat pickup are u using? if using the 25 one still it may not be long enough? i'd fill it to the bottom level of the cross hatching the 25 dipstick and see if the noise stops. if the noise improves then fill it to the full mark as the pick up and dipstick are designed to work together regardless of how deep the sump is full will be the same level compared to the crank. it will just take more oil to get there

[BrynDETT]

bringing this back from the dead!!!.... does anybody know more info these days?? im goin through the same thing atm... 2.8 takes 6.5litres.. so i put about 6.7 in and still no registering on the dipstick... wat have other ppl done?

[iruvyouskyrine]

Keep putting oil in until it registers the correct amount on the dipstick. Simple.

[BrynDETT]

not sure if its that simlpe... as its a rear sump now i suspect the dipstick it goin in too far and bending sideways a little along the edge of the sump.. it feels like it jams up a little about an inch from being all the way in... plenty of ppl have done this swap now so someone must have done something....

[89CAL]

Keep putting oil in until it registers the correct amount on the dipstick. Simple.

If the dipstick and sump are both out of the 2.8d then fill it as per quote above.

The sump is designed to hold 'x' amount of oil and the dipstick will show the correct level

You may have issues with high g forces during cornering with the volume of oil seen as patrols arent designed to corner fast, thats why the best option is to go with th 25 sump or baffle it really well

[Dobz]

rd28 dipstick pokes in towards the rear of the engine because that's where it holds the oil. It's like a reverse extended rb sump.

The rb25 dipstick is just poking into the shallow area of the sump where the oil level sits below when bolted to an rd28

Edited June 12, 2015 by Dobz

[BrynDETT]

thanx for the replys... i managed to get onto a guy with the same conversion and yeah.. i have to get a rd28 tube and dipstick and apparently there is a bunged up hole at the back of the block for it? sump off job...

[89CAL]

Yeah there is a bung in there. Will be a sump off job. Or at least i wouldnt do it with the sump on