Chev 6.2 lt Diesel Motor

Anything is possible, but this might be more than you are up to.

1) The 6.2 is a diesel. It is already fuel injected. Converting to the later electronic controls would require using all of the sensors used on the electronic version, for small gains.

2) Installing a turbo is possible. Again, you need to remove all of the components from a turbo model.

3) Installing a supercharger is possible, but it would be ALL hand fabricated. And no one is doing it on diesels.

The 6.2 Should take the added power. What it might not be too tolerant of is errors done when modifing it. If you are looking for some additional power, without lots of work, try advancing your injector timing by 2 to 3 degrees. Watch your glow plugs for signs of melting.

Thank you for your reply i must have an old one as it has a normal fuel pump on it perhaps i should look for a later model one is this motor basically the same as a 350 chev petrol motor ?

I do not think there are any parts that are shared by those two engines. The 6.2, and the later 6.5 L diesel engines were used in GM light duty trucks, and the H1 Hummer by American general. There are some non turbo versions, but most were turbo models. What is the vehicle that your motor is in, or came out of? If you copy the identification numbers off of the injector pump, it can be identified on the Standardyne site.

Hmm, changing to EFI would be painfull and expensive, even if you are talking about replacing the motor with a later EFI model. Considering the need for additional bits and peices including wiring loom, ECU and all the sundry sensors that make up the EFI kit.

Adding a turbo (or two) is a much easier path to follow. Some consideration on how much boost, and what extra capacity for fuel enrichment is available will be needed.

Putting on a supercharger has the added complication of additional drive belt system. Though being loosely based on a small block chev the hardware would not be too hard to scrounge.

Plenty of info for doing that "upgrade" around the various automotive forum sites. You might find something on the IH8MUD or Diesel Bombers site

Rumour has it, that yes it is "based" on the SBC 350 but aside from the external ancillaries there is not much that is interchange able.

I looked at putting one in a Holden WB panel van (Oz GM car) that I had as a work vehicle, to replace the 6 cylinder blue motor. That the engine mounts and gearbox/bell housing were the same (as the 350)was a bonus saved fabricating and getting it engineered. Cost to buy and the reported poor fuel consumption killed the conversion.

The mechanical fuel pump is a fuel lift pump not a pressure pump and is similiar to but not the same as the petrol variant.

Holden WB panel van similiar to mine except mine was white.

The picture looks like the front of the 71 to 76 full sized Chevy passenger cars that were sold in North America. Buick, Pontiac and Oldsmobile looked very similar. During those years GM offered a diesel engine that was based on the Oldsmobile gasoline engine. It was sold as a 350 inches(5.7L) in the bigger cars and some pick ups. They also sold a smaller version for just a few years at 260 Inches. All of these engines had valve covers that were the same as the gasoline Oldsmobile engines. Some had 10 bolts, some eliminated every other bolt, and had just 5. But they would interchange. There should also be a 3/4" curved water pipe coming out of the thermostat housing, to the water pump. If that is the engine that the OP has, I would not recommend doing anything that might shorten the reliability of the engine.

I dare say the OP has something that looks like this. They were originally fitted with a Toyota 4litre "2H" diesel, I suspect a previous owner has done the conversion to the 6.2. The chev/olds diesels were never offered in anything locally in oz, but were imported by "Wheeler Dealers" who also imported trucks and sundry other aftermarket goodies.

Landcruiser HJ 75 Tray back ute

The WB holdens were built from 1980 to 84 and came in Ute, Tray back 1 tonners and Panel Vans. There was also a long wheelbase sedan called the Statesman. These were the final iteration of the "H" series cars which, were built from 1970 to 79. They came in 2(Monaro),4 door sedan(Belmont, Kingswood) and station wagon as well as the commercial vehicles.

hI yes this is almost exactly what i have mine has a 600mm chassi extension and a extra cab which is very handy for the dog and a engal fridge .my installation of the 6.2 chev was done by a mob called brunswick deisels and i think over the years the conversions have got alot better and more profesional here

hammrtong

First of all, as a Diesel, your engine already has the "fi" (fuel injected) part of the "efi" you want. To make it electronic (the "e" part) would require installing electronically actuated injectors with control and actuating systems which would make it extremely expensive and difficult, considering the value of the 6.2 chev. I would consider tossing a 4BT or 6BT Cummins (depending on space available for the conversion) into your vehicle's engine bay. These engines are very reliable and are widely used in conversions and repowers in vehicles of all types. They are available in a number of power ratings for any given size, with and without turbo's, and are relatively easy to "soup up".

Unless you are a DIY kind of guy looking for a challenge, with way too much money to spare, why not just buy a vehicle with the diesel already installed? Even OEMs will "customize" a package. It will have the additional advantage of having someone else's warranty.

Just spiffballing...

Maybe W.C. Fields was right. We do have a moral obligation to separate a fool from his money.

Give it propane instead. You can add a flow of propane or LPG to it for a good effect. There are sites on the net for it already.

As Hammertong, is in Oz his options are a bit limited in the Cummins department, though an upgrade to the Toyota V8 diesel isn't out of the question but it will cost you a Somali Pirates ransom to do it.

There are a number of "local" LPG on Diesel kits available. Intended to give better bang for your buck, but with the added hassle of additional yearly roadworthy inspections. As well as now trying to find a diesel and lpg bowser that are close together without having to drive all over the forecourt of the service station.

I dare say Hammertong is looking for an improvement in performance and economy hence the EFI and turbo/supercharging question.

Maybe some of you Stateside guys know of some "shade tree" improvements that can be done to the 6.2?

Maybe some of you Stateside guys know of some "shade tree" improvements that can be done to the 6.2?

Try about 2-3 degrees more advance on the injector pump. Watch for glow plugs burning.

Just follow these simple instructions...

As you will see, hardly a "shade tree" upgrade, but good for +60 HP and +115 lb-ft torque.

http://www.dieselpowermag.com/tech/chevy/0554dp_62l_buildup/index.html

http://www.bankspower.com/products/show/156/11