Build BJ74 - new owner, old truck

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cruiseroutfit said:
They can absolutely ship today, we still have 3 hours to get things boxed up before they leave. I'm getting them pricing now.

EDIT: Jason will be calling you shortly. Sorry for the back/forth on seals. I reaaaaaally need to get all those parts added to regular inventory. To be fair we'll sell about 8 of those seals and use about 8 in-house annually, so they are looooow on the to do list. :D
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All right got it done, and looks like they’re shipping this afternoon! Glad to have such great vendors around!

Ya good motivation.

Thanks again!
 
Got a phone call from the machine shop this morning, heads cracked between the valves on cylinder #1. Fuuuuuuuuhhhhhhhk

Really didn’t see that coming, truck hasn’t been overheated since I’ve owned it and really thought it was the original hg that had failed.

Seems like 13b heads are a bit easier to come by and read a few sketchy comments that people on the inter-webs have used them on an 13bt… anyone have some definitive answers?

1110158031 for the 13BT
Vs
1110158020 for the 13B
 
That does suck, I don’t recall reading about the 13bt head cracking, usually the 3B.

I haven’t fully dug into the main differences between the 13b and 13bt blocks/heads. They both are direct injected, but I’m guessing theyhave different compression ratios due to turbo vs NA. I don’t know the head differences, but it’s possible (I have no idea) the 13B head could raise compression due to it being a non-turbo engine.

You could check with EBI land cruisers in Canada, @70sguy deals with 70 parts out of Canada as well.
 
FJBen said:
That does suck, I don’t recall reading about the 13bt head cracking, usually the 3B.

I haven’t fully dug into the main differences between the 13b and 13bt blocks/heads. They both are direct injected, but I’m guessing theyhave different compression ratios due to turbo vs NA. I don’t know the head differences, but it’s possible (I have no idea) the 13B head could raise compression due to it being a non-turbo engine.

You could check with EBI land cruisers in Canada, @70sguy deals with 70 parts out of Canada as well.
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Ya I’ve got about 30 calls/texts/emails/dm’s out there so hoping somebody can dredge something up.

A couple shops are looking into new castings, but I’m not sure how I feel about the Chinesium. I think I’d prefer a used OEM, but that definitely could be a can of worms as well..
 
John @Radd Cruisers has been very helpful and suggests that if it can pass a pressure test and holds pressure when remounted with a composite HG it should be serviceable until a replacement can be found/rebuilt. Not that I was to do 2 head gaskets on a 13bt in a year, but it might keep me rolling.
 
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Some cruiser porn to keep the motivation high!
 
attempting to dig into the differences on the 13B vs13BT head.

Staring at zoomed in pictures of a 13B head vs the head gasket I have it looks like the passageways are exact.

Valve stem diameter and oil clearance are a few thou different but all the other specs line up.

Curious

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Yeah I believe the heads are extremely similar. Oil clearances being looser on turbo engines is a way to help manage heat/friction so I would imagine that’s the reason on an older diesel like this.

Really the only worry I would have is to see if there is any volumetric difference on a 13b head that would raise compression. Only thing I could find is 13bt is 17:1, it appears the 13b is 20:1.

So possibly you could get a thicker head gasket if indeed that is the case to help lower compression, (custom made?) but you would need a 13b head measurements to get that for sure.

Just spitballing.
 
FJBen said:
Yeah I believe the heads are extremely similar. Oil clearances being looser on turbo engines is a way to help manage heat/friction so I would imagine that’s the reason on an older diesel like this.

Really the only worry I would have is to see if there is any volumetric difference on a 13b head that would raise compression. Only thing I could find is 13bt is 17:1, it appears the 13b is 20:1.

So possibly you could get a thicker head gasket if indeed that is the case to help lower compression, (custom made?) but you would need a 13b head measurements to get that for sure.

Just spitballing.
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Ok thanks Ben, makes sense.

My thought is looking at the specs for the head/ valves and that both engines spec the same for bore/stroke/displacement and share a common HG that any volumetric difference would come from changes in the piston bowl size/shape.

Would it make sense if the intake valves, stem seals and guide bushings are the same but the exhaust valves are different (same specs) that it’s likely a metallurgical difference to deal with the higher EGT’s of the boosted engine vs non?
 
Using the downtime productively. EGT pre turbo, coolant temp sensor in the t-stat housing, sensor wires for the battery gauge and oil pressure sensor.

Been raiding the junkyard of various clips off a few early 90’s 4Runners, Tacoma's and Corollas. Not quite factory but clean enough that I don’t notice it.

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Looking at some of the vacuum lines and they’re a bit crunchy and a few are absolutely welded in place.

90999-92008 Is 2.6m of bulk vacuum line
(27 cheeseburgers side by side for those following along in imperial)

Called the local Toyota stealership… $167!!!! For 8-1/2ft of vacuum line and it’s gonna take a week. Holy hell.

$37 from Amayama, I think I can wait an extra week. If anyone from the Dinktown dealership is reading this :flipoff2::flipoff2::flipoff2:
 
Picked up the head on Friday, passed a pressure test and further inspection of the valve seat and injector port shows no cracks anywhere else. I know some people say they can run 3bs with multiple crack depending on the location but I’m still looking for a new head.

There were only 7 bolts when I took off the exhaust manifold, I thought extracting the broken stud was going to be a nightmare but it started spinning after I drilled part-way through it. Came out with an easy out quite politely.

New valve stem seals courtesy of Cruiser Outfitters.

Just waiting on a new head gasket from RADD and this sucker will be going back together.
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theres a couple russians on here... maybe reach out?
 
Finishing touches on the Redarc gauges and a mounting bracket for the low coolant alarm and modules for the guage install. Just have to figure out some settings and then put the dash back together 😅
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As the French say “on with his head”…

Thanks John @ RADD Cruisers for the sage advice and parts.

Replacing the chain on the engine hoist with a turnbuckle helped me ever so gently lower the head on.

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