14BT Turbo Upgrade: Munro GMT upgraded billet

[roscoFJ73]

Being a relatively rare engine in Australia, I think some shops just don't know eE.

They are fundamentally the same as other Denso type injectors.
But at least you know where to look now regarding the surging. Sounds like the governor in the pump. I think you said it was a rotary pump. Some of the other denso rotaries get surging from weak governor springs.

 

[crave reFleXion]

They are fundamentally the same as other Denso type injectors.
But at least you know where to look now regarding the surging. Sounds like the governor in the pump.

They are, but some of the parts in the nozzle assembly are slightly different. Also, the previous shop used random brass washers (completely the wrong thickness and material) for the injector washers... They were also cracking way too low.

 

[roscoFJ73]

They are, but some of the parts in the nozzle assembly are slightly different. Also, the previous shop used random brass washers (completely the wrong thickness and material) for the injector washers... They were also cracking way too low.

Ive always thought these injection shops had access to a secret denso data base.

 

[Owyhee Jackass]

Good to hear the turbo is working out. Have you increased the boost pressure up from the 15 psi it came set at?

Do you send your old turbo back to the builder as a core?

You mentioned adjusting the star wheel in the boost compensator, is that something you've done with the injection pump in the vehicle, because I'm looking at it wondering if it's possible.

I just recently changed out my stock actuator with a 15 psi spring and turned my fuel screw up/in about 1/8 of a turn and wow! It's like driving a different vehicle. Not sure why I waited so long to mess with it, I thought it was such an improvement over the stock NA 3B, I just left it alone.

 

[crave reFleXion]

Good to hear the turbo is working out. Have you increased the boost pressure up from the 15 psi it came set at?

Do you send your old turbo back to the builder as a core?

You mentioned adjusting the star wheel in the boost compensator, is that something you've done with the injection pump in the vehicle, because I'm looking at it wondering if it's possible.

I just recently changed out my stock actuator with a 15 psi spring and turned my fuel screw up/in about 1/8 of a turn and wow! It's like driving a different vehicle. Not sure why I waited so long to mess with it, I thought it was such an improvement over the stock NA 3B, I just left it alone.

Hey mate, it's basically impossible to get to the star wheel with the intake manifold in place, do if you want to play with it, you need to remove the intake manifold. You can rotate the aneroid pin with everything in situ, but if you haven't been inside the compensator before you probably won't have any reference point. The 14BT definitely responds well to a bit more fuel and it can really bring the engine to life. As with anything, an EGT gauge and boost gauge are vital if you want to play with fuelling. I would also like to get an AFR gauge, but haven't got there yet. I've currently got my static IP timing at 1.33, but I'm thinking of bringing it back a bit to help even more with spool up and less smoke, and then modify the automatic advance piston (shims) to regain power up high... I'm not there yet and need to resolve my fuel starvation issue first.

 

[Owyhee Jackass]

That's what I was thinking, remove the intake, or pull the pump. I do have EGT and boost gauges. Saw your video on timing, another thing I don't see how to do in the engine bay, but you managed. Mine's LHD, so I have brake booster and master cylinder in the way as well...all things I should have checked prior to putting the engine in, I guess.

 

[crave reFleXion]

So I've confirmed that my fuel starvation issue is NOT related to the tanks. I ran a new fuel line directly to the input on the IP and then back to a Jerry can full of diesel, but still the same issue unfortunately. I suspect there's something going on inside my pump unfortunately. It feels like a slipping clutch and only really occurs under heavy acceleration mostly in third and fourth and from around 1,900 - 2,300 rpm. After that the surging stops and acceleration is normal again. If I don't give it to it at those RPMs, then it accelerates normally without the surging. Any ideas?

 

[FJBen]

Pretty much sounds like a pump issue. I know I’m not much help but Probabaly needs taken to someone to fix it.

 

[Nz Nath]

Did you check that there's no strainers on the pump inlet fittings? The inline pumps have one on the lift pump inlet that blocks up causing fuel starvation. The rev range your fault is occurring at is basically around peak torque.

 

[crave reFleXion]

Did you check that there's no strainers on the pump inlet fittings? The inline pumps have one on the lift pump inlet that blocks up causing fuel starvation. The rev range your fault is occurring at is basically around peak torque.

Yeah mate, I removed the banjo bolt to check, but it didn't actually have the little strainer on it (the previous rebuilder must have left it out).

 

[crave reFleXion]

Pretty much sounds like a pump issue. I know I’m not much help but Probabaly needs taken to someone to fix it.

Yeah, that's my next port of call... I live close to Josh from JH Hilux, so I'll have a chat to him.

 

[FJBen]

Yeah, that's my next port of call... I live close to Josh from JH Hilux, so I'll have a chat to him.

Really interested to see how that turbo goes with the pump running right. I know there are "better" options at turbo than a CT26, but I really like the fact it's "factory" and bolt on and seems to run pretty dang good from Munro. I really haven't heard any bad news about those.

I'm hoping for 20~23psi with boost coming on quicker than it currently does.

 

[Nz Nath]

@FJBen have you looked at the bj74 owners group on Facebook? There's not a lot of performance posts, but if you search the old posts you will find a few mentions of results with hi flow turbos by Munroe and other aussie turbo shops. It looks like they do spool up better than the stock turbo, but still a little bit slow. Ie you're still not going to see 10psi till almost 2000rpm.

 

[FJBen]

@FJBen have you looked at the bj74 owners group on Facebook? There's not a lot of performance posts, but if you search the old posts you will find a few mentions of results with hi flow turbos by Munroe and other aussie turbo shops. It looks like they do spool up better than the stock turbo, but still a little bit slow. Ie you're still not going to see 10psi till almost 2000rpm.

Thanks for that insight, I'm not on facebook but maybe I will have to succumb if there is good info there.

Yeah, I'm wondering if the CT26 base is just all around bad for the 13BT even with upgrades. I don't need super performance, but the quicker spooling would be the best upgrade I think for the 13BT.

 

[Nz Nath]

The aussie land cruiser scene does seem to exist online only via Facebook groups. To be fair, discussion forums seem to have died off a lot for many interests. There's definitely more bs on Facebook though.

The ct26 hi flows sound similar to the ct20b I had a few years back. Driveability was definitely improved, but not radically. In my case I had 3.54 landrover diffs, and that meant low revs at cruise. Great on the flat, but on hills I wasn't seeing enough boost in 4th gear till I was doing 100kph. That just didn't work for me in hilly NZ. The holset with 10psi at about 1600rpm was an instant game changer, I was able to max out my fuel pump but still get lower EGT than ever before, and hold my speed or accelerate up big hills even with the high gearing.

 

[FJBen]

The aussie land cruiser scene does seem to exist online only via Facebook groups. To be fair, discussion forums seem to have died off a lot for many interests. There's definitely more bs on Facebook though.

The ct26 hi flows sound similar to the ct20b I had a few years back. Driveability was definitely improved, but not radically. In my case I had 3.54 landrover diffs, and that meant low revs at cruise. Great on the flat, but on hills I wasn't seeing enough boost in 4th gear till I was doing 100kph. That just didn't work for me in hilly NZ. The holset with 10psi at about 1600rpm was an instant game changer, I was able to max out my fuel pump but still get lower EGT than ever before, and hold my speed or accelerate up big hills even with the high gearing.

Yeah I have a fresh turbo so I'm thinking I'm not going to see a huge improvement. Are you running a Holset HE221?




Sorry for the hijack!

 

[crave reFleXion]

Still haven't had a chance to talk with Josh at JH Hilux yet... Pump is good some days (no surging) and then surging the next. Can't find any pattern to it unfortunately.

 

[crave reFleXion]

So, a bit of an update... I think I was barking up the wrong tree with the pump surging. I think I wrote in a previous post that the issue is a bit like the clutch slipping, and guess what - I think the clutch is slipping. I went up to our property a couple of weekends ago and was trying to drive a steep muddy hill we have, but it took about five attempts to get up and whilst I was attempting it the clutch was smoking/burning. Afterwards on the way home, the previous issue that I suspected was a fuel pump issue was significantly worse, so I am almost 100% that it is a clutch issue after all. Anyways, I'm in the process of finding a new clutch and will update results of old turbo vs new once I've got it installed.

I've also installed a new intercooler and I did up a video if anyone's interested:

 

[Earwigg]

Fixed the pressure drop gotta be a win.
Is that pipe running tubo across engine then back across under the radiator then 180 deg into the i/c?

 

[roscoFJ73]

Did you copy them or did they copy you?