Rb26 R32 - Blowby & Oil Consumption

[deongster]

Hi Guys,

Just wanted to check with you guys - do any of your Rb26 suffer a lot of blowby? When on idle and when u rev - do you get a black soot coming out of the exhaust? And when on boost lots of black smoke? Like it is extremely rich?

What is the average oil consumption on the RB26?

Im on Magnatec now - drove for 2 weeks - and i checked 2 days ago it was about half from the F line. Had to top up.

Just want to see if any of you guys experience this - and if any of you know if it is a problem... If it is a problem what is the solution?

This is my first RB26 so im learning as i go along.

Car is running fine - boosts fine as well witha slight misfire at 5500rpm to 6000rpm - should be the coils, will be changing them at the end of the month - just these 2 issues - no leaks other than return hose from the turbines has a slight leak.

Thanks for the help in advance.

Cheers!

[Ben C34]

Are you confusing the car running rich (black smoke) with blow by?

And magnatec?

[Ben C34]

And that's using way too much oil.

Start planning a rebuild.

[niZmO_Man]

What oil weight do you run? I wouldn't risk my RB26 with Magnatec; I use Penrite SIN/Racing/Premium oils.

Search for the AFM solder fix (in DIY section I think). New coilpacks helps, make sure you chuck new spark plugs in as well (BCPR6ES-11, since you have new coils, no need to use 0.8mm gapped plugs). Fix all intake leaks.

My car doesn't use any oil, running off the actuators (~12psi) with standard turbos/ECU/injetors. 5L goes in, 10,000km later 5L comes out.

Odo shows 161k km but who knows how old the engine/car really is.

[deongster]

Are you confusing the car running rich (black smoke) with blow by?

And magnatec?

When on boost it gets a lot of black smoke - but only on boost - looks like running rich..

the blow by is when its on idle - the walls behind the exhaust will have soot on it...

Magnatec yea - i jsut got the car - did a service on it with Castrol magnatec and probably do another service in about 2k km time - so thats a 3000km change... trying to flush as much out as possible..

[deongster]

What oil weight do you run? I wouldn't risk my RB26 with Magnatec; I use Penrite SIN/Racing/Premium oils.

Search for the AFM solder fix (in DIY section I think). New coilpacks helps, make sure you chuck new spark plugs in as well (BCPR6ES-11, since you have new coils, no need to use 0.8mm gapped plugs). Fix all intake leaks.

My car doesn't use any oil, running off the actuators (~12psi) with standard turbos/ECU/injetors. 5L goes in, 10,000km later 5L comes out.

Odo shows 161k km but who knows how old the engine/car really is.

Noted on the oil - time to do a change soon then... weight is 10-40

What is the common ones you guys run?

Not running AFM - currently on Haltech Platinum Pro - yup looking at new coil packs and plugs end month... Thanks for the tips on the plugs - what brand do you guys usually run on plugs?

Engine is supposedly forged :-

CP Pistons

Eagle Rods

Tomei 270 cams

Springs/Retainers

N1 turbos with HKS actuators

Haltech

Rebuilt done probably about 35000 km ago - estimated... previous owner doesn't know as well..

Other than the oil and blowby - she seems to run very smooth and no glitches other than the misfire..

Oh and im also boosting less than 1 bar - average at 0.8 bar... don't boost it much to be honest...

Edited April 8, 2014 by deongster

[deongster]

And that's using way too much oil.

Start planning a rebuild

You reckon... hmmm... donest sound too promising

Any comments on LiquiMoly for the RB...

Edited April 8, 2014 by deongster

[iruvyouskyrine]

the blow by is when its on idle - the walls behind the exhaust will have soot on it...

Please explain further.

[Griffin]

sounds like moisture in exhaust coming out when you start it up in the morning .

[Ben C34]

Yeah,you aren't describing blowby.

[deongster]

Yeah,you aren't describing blowby.

sounds like moisture in exhaust coming out when you start it up in the morning .

Please explain further.

Hmmmm sorry guys - my apologies - ok when i first start the car in the morning or after driving to work about 30km away - if i were to reverse park the car with exhaust facing the wall - and i rev - there will be a lot of soot on the wall - looks wet and bit oily - my mistake for calling it blow by, blowby is when its from the breathers right? .. Sorry for the confusion...

Any comments on LiquiMoly for the RB as well as what Viscosity you guys use?

The reason for this post is to see if there is a problem and solutions for the problem... thanks for the responses guys

Edited April 8, 2014 by deongster

[deongster]

Just noticed this is actually in the wrong section of the forum - sorry Mods - could you help move it to General Maintenance please... thanks!

[KiwiRS4T]

Welcome to the world of high maintenance car ownership!

Plugs are NGK as above. Gap them down to 0.8mm regardless of whether or not you have replaced the coils.

I use Motul products myself although I see LiquiMoly is the No1 seller in Germany!. Just make sure you use a quality synthetic oil.

It shouldn't be using a lot of oil. If it doesn't come right get a compression test and/or a leak down test.

If it continues to pour out black sooty smoke get it put on a dyno (there are good tuners in Sydney) for a tune/diagnostic.

[djvoodoo]

Sounds 'tune' related with regards to carbon soot on idle. But almost all cars run richer on startup to help get up to temp.

What fuel consumption do you get ?

What's you coolant like? clear or murky? Any milky residue under oil cap?

You would be seeing grey/blue smoke from exhaust if rings etc were worn, not black.

[tricstar]

Try a thicker oil. When I was using 5-40 I was losing a lot. Changed to 15-50 Nulon at the recommendation of the engine builder and doesn't use any now.

[deongster]

Sounds 'tune' related with regards to carbon soot on idle. But almost all cars run richer on startup to help get up to temp.

What fuel consumption do you get ?

What's you coolant like? clear or murky? Any milky residue under oil cap?

You would be seeing grey/blue smoke from exhaust if rings etc were worn, not black.

Consumption maybe about 400km per tank - crazy - on on Ron98 for now.

Coolant was brownish and a bit milky when bought - like it has never been changed before - doesnt look like it has a gasket issue no oil on top etc - i flushed it down and replaced the whole coolant with new coolant - temperature has ALWAYS been good...

No smoke when idle or driving - only when i boot it and boost comes in at higher rpm - there is always a cloud of black smoke...

Try a thicker oil. When I was using 5-40 I was losing a lot. Changed to 15-50 Nulon at the recommendation of the engine builder and doesn't use any now.

Will try a thicker one after this - and id probably give LiquiMoly a try - it was very good for me in my previous cars in Malaysia - will see how it goes...

Welcome to the world of high maintenance car ownership!

Plugs are NGK as above. Gap them down to 0.8mm regardless of whether or not you have replaced the coils.

I use Motul products myself although I see LiquiMoly is the No1 seller in Germany!. Just make sure you use a quality synthetic oil.

It shouldn't be using a lot of oil. If it doesn't come right get a compression test and/or a leak down test.

If it continues to pour out black sooty smoke get it put on a dyno (there are good tuners in Sydney) for a tune/diagnostic.

hahah thanks mate - high maintenance - i think this one is pretty ok hahah i used to have an Alfa Romeo 155 V6, 155 V6 Turbo, 156 Twin Spark and a 168 3.0 V6 in Malaysia!!! LOL THAT WAS high!!

Noted on the plugs - they are NGK at the moment - dont know the Gap though... but it does use a lot of oil in my opinion - ill try and use a thicker Viscosity and see how it goes..

[niZmO_Man]

Try a 15W-50 oil as mentioned and BCPR6ES spark plugs (already gapped to 0.8mm so you don't have to gap them).

400km per "tank", I'll assume 60L and non-highway driving, sounds about right for a modified turbo car. Re-tune might give you better mileage, but those cams won't.

[deongster]

Try a 15W-50 oil as mentioned and BCPR6ES spark plugs (already gapped to 0.8mm so you don't have to gap them).

400km per "tank", I'll assume 60L and non-highway driving, sounds about right for a modified turbo car. Re-tune might give you better mileage, but those cams won't.

Thanks for the tip!! Yup im definitely going to try the oil and plugs and the new coil packs...

Phew - thanks for the sounds about right part!! hahaha as long as it sounds about right, im ok with it...

First RB - learning curve, always a learning curve =)

[MrStabby]

You need to find where the oil is getting out. If its being burnt you should see white/blue smoke out the exhaust. Have you looked for leaks? Using a thick oil is a bandaid (but it is cheap).

[deongster]

You need to find where the oil is getting out. If its being burnt you should see white/blue smoke out the exhaust. Have you looked for leaks? Using a thick oil is a bandaid (but it is cheap).

That is the thing - i don't see any leaks on the block or even head - only on the Turbine oil return hose there is a seep and the front right axle there is a slight leak - other than that - it looks dry - No drips on my tarp i put on the floor in the garage even after leaving the car for a few days...

So i actually don't know where the oil is going too - other than through the exhaust and out... hence the post to see if any one experience the same before...