change

[pop's coaster54]

Hi.
If i take the 2b diesel out of the coaster and put a holden red motor in it do i have to change the diff to.

Ron.

[Shirley]

Wouldn't it be better to stick with another Diesel engine buy a reconditioned motor?

[Mrcoolabah1au]

I could think of a dozen reason why it won't fit like engine mount tail sharft length gearbox mount

[BruceS]

Ron do you have a problem with the 2B motor?

[native pepper]

Hi.
If i take the 2b diesel out of the coaster and put a holden red motor in it do i have to change the diff to.

Ron.

Ron, you'd have to get an adapter plate made up to go between the engine and gear box, then get your tail shaft reworked to fit. The petrol engine will rev higher than a diesel, which could effect both diff and gearbox ratio's. Then you need to take into account the power of the red Holden to the power of a diesel and you could find it using much more fuel and run hotter. As others have said, if your engine is stuffed, look for a second-hand or reco your engine and just drop it in. You can get a rebuild kit for it for less than $1000 on ebay and can do it with the engine in the vehicle, if you can't do it, someone else would for a reasonable price.

Alga

[T1 Terry]

It was a common change over for many yrs, the only issue is eng temp and a better radiator and a large oil cooler fixes that problem. I've done a quite a few and every owner had nothing but smiles afterwards once the cooling issues were sorted. But the old Holden red motor is very dated, far better to go for a V6 Commodore motor, series 2 onwards, torque is in a similar rev range, fuel economy is very similar, power is near doubled and maintenance costs halved. Done lots of these, kits are available off the shelf, the cost is on par with rebuilding the original kero burner and adds the opportunity for dual fuel using LPG where it is available at a reduced cost to petrol, but simply running petrol when LPG is not available or economically viable.
The diff and gearbox were both designed for the cruel low rev thump thump torque of a diesel engine so they will think they have gone to heaven with the smoother torque of a petrol engine, so no problems there at all

T1 Terry

[jon_d]

The old V6 Commodore engine is almost bullet proof. The started their life almost 50 years ago.

[pop's coaster54]

Hi
it is only a thought at the moment, it has always been slow since we have had it. We have just come back from a 5,000 km round trip and it used 10 litres of oil all up.
Ron

[bagmaker]

Oil is cheap Ron.
Fill it up, slow down
problem solved

[T1 Terry]

Hi
it is only a thought at the moment, it has always been slow since we have had it. We have just come back from a 5,000 km round trip and it used 10 litres of oil all up.
Ron

You will probably find the problem is oil running down the valve guides, either crook valve stem seals or worn guides. The real problem is the condition of the rest of the engine. If the engine starts up with a cloud of smoke then it is relying on the oil running down the guides to create the seal on the rings to get enough compression the ignite the diesel. Fix the guide oil leak problem and the rings no longer seal.... and the engine won't start without a hit of ether. Look to see how much is huffing out the breather on the big hill climbs, there will be a lot of oil spray around the end of the breather pipe, disconnect the pipe going into the intake manifold and block the pipe in the inlet manifold to stop dirt getting sucked in, but leak the hose from the tappet cover open, maybe a longer hose into a plastic bottle, if there is oil in the bottle after the hill climb, the rings/pistons/liners are past their use by date, a full engine rebuild.
If you can do the job yourself, parts aren't that expensive, if you are paying someone to rebuild it and get all the machine work done on the head, expensive, if the crank needs to come out and be ground, expensive, the V6 Commodore engine would be a better option.

T1 Terry