2H help for a noob

[johnnyporp]

I have listened to THEY and THEY say alot. I'm new to this forum and deseratly need help and advive from the sages of toyota diesel knowledge. I have a 88' 62 looking to convert to diesel at a reasonable expense (arn't we all) I have aline on a hj-60 with a 2h w/ 280k miles on the thing for a darn good price.(under 3k)
1. What is the life of the 2h rates to? miles that is. What should I expect to get if I rebuild the motor.
2. With No cooling skirt what turbo and difficulty and for those of you thathave turbo'ed the motor are you pleased and would you do it agian. Or would you suck up the cost and move tword a 12ht.
Thank you for your input.
Desperatly wanting diesel

 

[crushers]

contact Bob Baryn (sp?) in Bend there and go for a ride in his HZJ60. he is right there and very knowledgeable...
cheers

 

[brownbear]

I have listened to THEY and THEY say alot. I'm new to this forum and deseratly need help and advive from the sages of toyota diesel knowledge. I have a 88' 62 looking to convert to diesel at a reasonable expense (arn't we all) I have aline on a hj-60 with a 2h w/ 280k miles on the thing for a darn good price.(under 3k)
1. What is the life of the 2h rates to? miles that is. What should I expect to get if I rebuild the motor.

lots of owners here say easy 400-500 tho kms...you do the conversion to mile

2. With No cooling skirt what turbo and difficulty and for those of you thathave turbo'ed the motor are you pleased and would you do it agian. Or would you suck up the cost and move tword a 12ht.
oh there is much to search on this forum. there are plenty of engine choices. probably the most inexpensive option is the offer you have. yes you can turbo it. keep the boost low. and it should still last. there is plenty of oz companies that offer turbos. or you make your own. search turbo's on here for more info.
12h-t is highly regarded. but limited in numbers and you will pay quite a bit for it. and parts are limited in the usa and canada. but many say it is the best engine toyota made...i dunno.
visit the g and s cruiser parts website for some engine info.

I say if the 2h has good compression numbers and passes a coolant pressure test your good to go.

Thank you for your input.
Desperatly wanting diesel

measage above

 

[70sguy]

The 3Bs go 400-500 easy and even 600 plus in some cases..
Not nearly as many 2Hs go the distance. A LOT of them crack rings at 300-400k km. My best guess is that the weakness is the lack of piston skirt cooling jets. The 2h is underpowered and ends up getting driven foot to the floor in the 60. This produces extremely high EGTs which results in oil coking up around the rings failure. Anyhow.. a proper rebuild will cost $6000cad, less if you can source an AUS jobber RB kit and do a lot of the work yourself. They are not a sleaved engine like the 3B so you get the bores machined and have to buy new 25over pistons etc. A rebuilt 2H will probably go another 3-400.

SO.. IMO the 2H might last 20k km... it might last 120k. I would not even consider putting a turbo on a 280k km 2H.

 

[70sguy]

Wooahhh! did you say.. 280K MILES????? RUN.. and don't look back.

 

[crushers]

another problem is hte rings eating into the cylinder walls...
for me a 2 H life span is 300,000 km although i have come across more than one with 500,000 and still running strong...

 

[bigbrowndog]

Just emailed this to my diesel mechanic mate. He is still on the floor laughing.

 

[johnnyporp]

Thank you all for the response. It could be the old adage if its to good to be true. Thus gives me alot to agian think about.

 

[bigbrowndog]

another problem is hte rings eating into the cylinder walls...
for me a 2 H life span is 300,000 km although i have come across more than one with 500,000 and still running strong...

I would like to hear the theory on the rings eating the cylinder walls.Seems to be a problem we have missed over here.

 

[bigbrowndog]

The 3Bs go 400-500 easy and even 600 plus in some cases..
Not nearly as many 2Hs go the distance. A LOT of them crack rings at 300-400k km. My best guess is that the weakness is the lack of piston skirt cooling jets. The 2h is underpowered and ends up getting driven foot to the floor in the 60. This produces extremely high EGTs which results in oil coking up around the rings failure. Anyhow.. a proper rebuild will cost $6000cad, less if you can source an AUS jobber RB kit and do a lot of the work yourself. They are not a sleaved engine like the 3B so you get the bores machined and have to buy new 25over pistons etc. A rebuilt 2H will probably go another 3-400.

SO.. IMO the 2H might last 20k km... it might last 120k. I would not even consider putting a turbo on a 280k km 2H.

Underpowered as compared to a 3b no doubt thats why we never got the 4 cylinder engine in our full size cruisersdown here..The 2H is basicaly the same as the 4 cylinder and same head design but does not drop as many pre combustion chambers, why? As we know the early 2H was sleeved and getting new liners and having the old pressed out and the new pressed in where is the advantage to a rebore especially when the liners have to be finished yet and the rebore can be done more accurately than Toyota did it originaly.I doubt any engine builder will give 6 to 12 months warranty on a set of pistons that have done 300/400 ks in any motor, pehaps you do. The standard 2H and 3B does not develop high EGTs until you fit a turbo also there are plenty of high mileage 2H motors here with aftermarket turbos, actually they are very common. Over fueling causes high EGTs and any motor that is suffering this from incorrect pump settings or crook injectors will suffer the same consequences.

 

[Tapage]

Mine 2H die at 447 k kilometers .. on 1999 .. expensive rebuilt with all Toyota parts .. and I have a good and very reliable engine .. turbo still in my plans .. so I'm kepp saving money ..

 

[70sguy]

Underpowered as compared to a 3b no doubt thats why we never got the 4 cylinder engine in our full size cruisersdown here..The 2H is basicaly the same as the 4 cylinder and same head design but does not drop as many pre combustion chambers, why? As we know the early 2H was sleeved and getting new liners and having the old pressed out and the new pressed in where is the advantage to a rebore especially when the liners have to be finished yet and the rebore can be done more accurately than Toyota did it originaly.I doubt any engine builder will give 6 to 12 months warranty on a set of pistons that have done 300/400 ks in any motor, pehaps you do. The standard 2H and 3B does not develop high EGTs until you fit a turbo also there are plenty of high mileage 2H motors here with aftermarket turbos, actually they are very common. Over fueling causes high EGTs and any motor that is suffering this from incorrect pump settings or crook injectors will suffer the same consequences.

Well not sure what you are doing differently in AUS, in Canada 2H motors do not last like 3Bs do. I can assure you that the 2H and 3B do produce suprisingly high EGTs. In the case of the 2H a turbo added early in life would probably help, problem is that people put em on when the damage is already done and they just finish em off. unfortunately nothing you can do about the lack of skirt jets.
As far as overfueling, there are way more 3Bs running around here than 2Hs and most of em in are just the same state of distune and I hear of about ten 2H ring failures to one 3B precup failure.

Pistons is mute point since they should never be reused anyway.
In re to liners vs rebore blocks.. I guess the benifit to liners is that the block is good for more than just one rebuild, but I guess it's just as well.. I don't know a lot of folks wasting money on the first rebuild on a 2H let alone a second.

 

[bigbrowndog]

I don't know a lot of folks wasting money on the first rebuild on a 2H let alone a second.
LOL I would have given you more credit than to make a statement like that. Not worth a reply.

 

[roscoFJ73]

I have listened to THEY and THEY say alot. I'm new to this forum and deseratly need help and advive from the sages of toyota diesel knowledge. I have a 88' 62 looking to convert to diesel at a reasonable expense (arn't we all) I have aline on a hj-60 with a 2h w/ 280k miles on the thing for a darn good price.(under 3k)
1. What is the life of the 2h rates to? miles that is. What should I expect to get if I rebuild the motor.
2. With No cooling skirt what turbo and difficulty and for those of you thathave turbo'ed the motor are you pleased and would you do it agian. Or would you suck up the cost and move tword a 12ht.
Thank you for your input.
Desperatly wanting diesel

Ive heard plenty curse the 2H for its lack of get up and go but as for its reliabilty ,Ive never heard anything bad,not here anyway.
It was a big seller here in the HJ75 and HJ60 even though petrol was cheap here in the mid 80s
As for this deal,the price seems a little high for the miles its done especially if you are thinking about a rebuild.
I might look for something with less miles and pay more.
A good used 1HZ might be another option

I was talking to the rebuilder that done my 1HZ last week about a price on rebuilding a 12HT and he says the 2H is totally reliable when rebuilt.

How long will a 2H last?? A damn long time,maybe half a million miles or more in the right hands(like any diesel)

Some owners get a long life out of A turboed 2H and some dont.
Ive always thought this has to do with how often and for how long you spool the turbo up

 

[70sguy]

I don't know a lot of folks wasting money on the first rebuild on a 2H let alone a second.
LOL I would have given you more credit than to make a statement like that. Not worth a reply.

Just calling it as I see it. I didn't say that anyone had to agree with me As I said before, you folks in AUS seem to be enjoying longer life out of your 2H motors. Here where I am.. you add up the cost of a full RB and then a turbo kit ... all for another 300k km.. well it goes back to my original statement.

 

[Colorado Boy-74-FJ40]

welcome NOOB

let the games begin

 

[Greg_B]

As we know the early 2H was sleeved and getting new liners and having the old pressed out and the new pressed in where is the advantage to a rebore especially when the liners have to be finished yet and the rebore can be done more accurately than Toyota did it originaly. The standard 2H and 3B does not develop high EGTs until you fit a turbo also there are plenty of high mileage 2H motors here with aftermarket turbos, actually they are very common. Over fueling causes high EGTs and any motor that is suffering this from incorrect pump settings or crook injectors will suffer the same consequences.

Hi bbd. You folks got a lot more 2H's down under then we got in Canada (1986-87). Sheldon is right, in that our experience here is rings seem to get spat out around 350,000kms. If your truck is Cdn and past that, then all seems well. Sheldon fields calls quite regularly it seems from people with sick 2H's. I don't know what the difference would be, but there seems to be one. Not saying there are none past that mileage...there are, and going strong too.

Talk to people who have put pyro's on NA 3B's. EGT's are horrendously high. Plunk a turbo on with no other changes chances are the engine will be much better off. Of course this brings up the question of age and if a turbo is wise before a rebuild. The fact that the 3B is skirt cooled and has liners vs no skirt cooling and no liners in the 2H (talking Canada experience here) lends weight to the 3B as the one to choose if you are staying Cdn imported Japanse diesel.

Peace...

gb