Can a 2L-T turbo wreck a B series engine.

[Tonka]

I have a 1982 BJ40 and a choice of B or 3B engines to plonk into the engine bay. The original B engine is sitting in it at the moment.

I have a good 1991 2L-T engine in a LJ70 sitting doing nothing.

I havent done much research into turbo-ising the bj40. So heres some turbo beginners questions.

1. Can a 2L-T turbo be easily mated to B/3B engines?
2. Is it worth doing?
3. do I put the engines at risk of kabooming?

 

[Hulsty]

2LT wont mate to a B series transmission, its a bad choice of engine anyway they are prone to issues, over heating and head cracking. better off turboing the 3B

 

[lostmarbles]

I have a 1982 BJ40 and a choice of B or 3B engines to plonk into the engine bay. The original B engine is sitting in it at the moment.

I have a good 1991 2L-T engine in a LJ70 sitting doing nothing.

I havent done much research into turbo-ising the bj40. So heres some turbo beginners questions.

1. Can a 2L-T turbo be easily mated to B/3B engines?
2. Is it worth doing?
3. do I put the engines at risk of kabooming?

2LT wont mate to a B series transmission, its a bad choice of engine anyway they are prone to issues, over heating and head cracking. better off turboing the 3B

I think Tonka just wants to use the turbo off the 2LT Hulsky.

I don't know if there are fitting issues or whether it is the appropriate size turbo .. but I'm sure there are others here who can answer those questions Tonka.

A lot of people will say your 2977cc B diesel is too weak to turbo but I understand yours is a 1982 model. If so, I think it could well have the stronger camshaft and piston-skirt-oil-cooling found on 3B engines (which most consider are okay for turbo-ing). You may have to check inside your B and see.

 

[Combat Chuck]

I doubt the 2LT Turbo will fit a B. Stock turbo for that generation of motor is likely a CT6, which is generally regarded as a poor unit- bad oiling systems, prone to breakage, weak displacement.
Additionally, to make this work, you'd need an intake to mate the turbo to, and either spend more money than the mod is worth on tubing to make it all work, or try and cobble the L intake somehow onto the B head, which is likely impossible; though, if it could be done, it would be comparable to making the B aspirate through a straw.

If you want a turbo setup, I've read that the 13B-T intake will mate to a 3B, and make turboing the whole unit much more easy.
IMO, rebuild the B, and save it for a puritanical buildup someday, meanwhile turbo the 3B and have a ball.

Good luck!

 

[BreckenridgeCruiser]

@lostmarbles: The B series, regardless of year, does not have piston skirt cooling. It may have the stronger cam, but I am not sure about that. The changes to the engine should be the same as the changes from the B to 2B in JDM rigs: all 3B external parts, but maintaining all of the internals specific for that block.

 

[prado t]

As said from the begining of time. A 3B is much better for turbocharging, due to the fact that it has piston skirt coolers (oil nozzles that spit oil underneath the piston around the skirt).

So now that you are going to turbo the 3B . You can purchase a CT26 Turbo and get an exhaust manifold from a 13B-T. There are lots of vendors. EBI, GS , RADD.

If you were to turbo the 3B with the CT20,(it can be done using an adapter) you would have good bottom end till about 1300RPM and then it would be like hooking up your wifes hair dryer to the intake manifold. ASK ME HOW I KNOW

 

[crushers]

or cut out the middle man and get the manifold from Dave at Japan 4X4

 

[lostmarbles]

@lostmarbles: The B series, regardless of year, does not have piston skirt cooling. ..

One thing I've learnt Craig is that it is always best to say "I believe" rather than making a statement like this!

I'm guessing you are referring to the "2977cc B-engine" rather than the whole B-series too. And it appears that you are incorrect. (Notice I say "appears". )

I don't know why I never thought of doing this before ... but I've just checked the EPC to see if my hunch (that they fitted squirters to some 2977cc B-engines) is correct.... And it certainly appears to be correct according to this source of Toyota information. (I've used the word "appears" again.)

The EPC lists Dyna 200 (BU60 70 & 83 models) as running a 2977cc B-engine using 15708-58020 squirters (which are the same squirters as used in a 3B found in a BJ42).



(So even if the EPC data I've looked at is wrong ..... My choice of wording doesn't make "yours truly" wrong ..... He he he.)



PS. Any manifold that fits a "3B as found in a BJ42" will fit a "1982 2977cc B-engine as found in a BJ40" just as well.

 

[crushers]

as long as you allow for the difference in bolt mounting size...

 

[Radd Cruisers]

The turbo on the 2LT will work with the 3B, but not for long. It is too small and will be operating way off its map, and once the 3B gets revved up a bit the turbo will be spinning much faster than its design limits.

A friend tried this because he got the turbo for free, but it exploded after a few weeks.

Get a turbo that is a better fit for your purposes.

~John

 

[lostmarbles]

as long as you allow for the difference in bolt mounting size...

Nup. Not this time Wayne. I'm pretty sure a 1982 2977cc B-engine should have the same manifold fastener sizes as "a 3B as found in a BJ42".

Since Toyota produced these "late-model" B engines concurrently with the 3B they apparently passed on many of the same "3B upgrades" to them.

 

[crushers]

have to agree with John, the proper turbo for your driving style is the best bang for the buck

but

i know a guy in NB that is using his truck off road only so that turbo would be kickin for him.

 

[crushers]

learn something new everyday ...

 

[Chang-kuao-lo]

so, since i'm too lazy to look it up myself, what's the difference between a ct20 (2lt) and a ct26 (13bt) turbo?

 

[Hulsty]

The turbo on the 2LT will work with the 3B, but not for long. It is too small and will be operating way off its map, and once the 3B gets revved up a bit the turbo will be spinning much faster than its design limits.

A friend tried this because he got the turbo for free, but it exploded after a few weeks.

Get a turbo that is a better fit for your purposes.

~John

do you know anyone or have you reached the limits of the factory CT26 turbo on a 13BT?

 

[Wedg3]

Don't know for the turbo size but the B engine if you keep your EGT between 600F and 1100F and your water temps below 100C. The psi between 0-10psi.. The B engine is strong enough to take it.

I rebuild 2 engine and see the difference between the B, 3B and newer motor.

3B is hard as hell, B engine is hard and strong and new engine is 3 or 4 time smaller in every part. 1 Connecting rod of the B engine is 3 times the size of a new connecting rod from other diesel motor. So if you put a turbo on a B your engine will do maybe 400 000km against 600 000km if you don't have a turbo. But if your able to have a good turbo your truck won't be the same at all !

By the way... I read a lot on piston skirt. The only effect is to cool down the piston.. not for oiling it. Thats scrap your oil faster because the piston is really hot ... and need more oil change to keep it good. Thats good for a race car that need lot of power in not long time. If you keep your EGT between what I tell, the pistons skirt is good.. but not as good as everybody tell us. You really need it when you run 35'' tire in mud and your feet on the floor. By the way.. the piston skirt run only at a certain psi that I don't know because of the lack of oil at low rpm that all B serie engine have

If you have a B engine, you can machined piston oill skirter... if you really want it or notch the connecting rod for your oil leak from there and go up your piston to cool it faster.

 

[crushers]

interesting ...

 

[Radd Cruisers]

do you know anyone or have you reached the limits of the factory CT26 turbo on a 13BT?

Oh, yeah... it's possible to do it. It will be in the low 20s I suspect (PSI).

They really don't see high boost all that much, you'd have to be driving foot to the floor or pulling some massive hills with big tires to kill the thing.

~John

 

[Tonka]

thanks peeps.

sorry for my lack of response. I'm forever forgetting to subscribe to the actual threads i start. duuuh.

Reading all this has cheered me up.

(I've just spent the last 2 hours cursing my Toyota, my skills, quality of 32year nuts and my newly bought nut splitter -which has managed to maul everything but break the nut holding the rad frame to the chassis).

 

[Michael Hanson]

After owning turbos, the one thing I have learned is, that the engine and turbo have to be sized for each other or one will blow -up. First hand experience. MIke