axt turbo and fuel adjustment

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Nic

Nic

Joined
Mar 24, 2005
Threads
8
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103
Location
Langley, BC
My question is to those of you with the axt turbo. What have you adjusted the fuel to? I am running 10 pounds of boost right now but have not messed with the fuel yet. I have already conquered some really big hill climbs (the Coq. and the one outside of Westbank) and my temps haven't really been past 1030F so i think i can get more power out of her. :)
 
If you have not turned up the fuel at all, they I do not think you are getting any power from your turbo. I have done several of them on 70 series and 42 sereis and until I turn up the fuel the turbo did nothing. There is a guide in the instalation manual on turning up the fuel on 3B. A good rule of thumb is to turn up the fuel in quarter to half turn increments until either the pyro is getting to high, or you are blowing blck smoke all the time. I think in the manual it talkes about being in 4th gear on level ground at 55-60mph and the pyro being between 800-1000F.

Cheers,

Michael
 
I am running the AXT turbo on my BJ70. Running 15lbs of boost. Pyro temps are fine upto 1150... When I have pulled hills like the ones you mention I just live by the pyro and engine temp. If the pyro wants to climb higher than 1150, I just ease off on the throttle.

I just had the truck intercooled, installed a premium oil cooler and shrouded in my rad/intercooler/oil cooler etc. so that all air coming thru the grill is forced to go thru all of the above. I am not running the stock fan, but an electric one. Am planning on having an aluminum rad installed to finalize things (on order). I have noticed a significant drop in water temp, and exhaust temp since installing intercooler/oil cooler/ and shrouding it all in (stainless). I have a custom trailer and pull big hills on long road trips so I am definitely pushing the envelope of what the truck was originally designed for. I was fine running the 15lbs of boost before intercooling etc.... just had to watch the temps when fully loaded... pulling the loaded trailer at altitude and climbing hills at highway speeds. The Coq... (snowshed hill) and coming out of Kelowna (Westbank) are ugly climbs... ;)

I haven't run either of those hills yet since the intercooling/oil cooler/shrouding everything in... but know from running around locally that it has made a huge difference.

Don't misunderstand me, I am not suggesting that anyone/everyone running an AXT turbo needs to do this.... not at all. It is just that I am probably doing things a little on the extreme side and for my uses it made sense. Running 37inch tires and pulling my aluminum FJ45 style trailer loaded up with rooftop tent and gear for a month long hunting trip that starts by driving from Vancouver to Mackenzie and then heading down a 500km plus, logging road isn't what the average Cruiser owner is probably doing with his rig.

I will probably be able to turn the fuel up some more as now the engine temp won't budge above 205 and the pyro doesn't want to go much above 800 when driving and passing at freeway speeds pulling hills.

Bottom line is you probably can turn the fuel up some more to 14-15lbs of boost and live by the pyro and your temp guages, providing they are good ones and accurate. Worst case senario... pull your foot out of it when your exhaust temp wants to climb beyond 1150.

I realized that.... the more boost I run, the more gear I haul, the faster I go on the freeway, the bigger the hills, the higher the altitude, the more heat that is being created (its the highway speeds that kill ya) as the engine works harder and produces more power. So I think you have to look at what you are doing with your truck and how far you want to push the envelope. The farther you push... the more steps you will have to take to cool things aqequately.
 
Thanks for the reply. I guess i was hoping someone would say "turn it 2 full turns" or something like that. I never got the instructions with my turbo because it was used so i'll just have to try it out and see.
 
IIRC

it was about 1 1/4 turns when i did mine.

9 lbs of boost is all i run. no intercooler......yet. i set it but the 4th gear and pyro method.

i think i still have the words from the kit. could scan and email or fax you a copy if you like.

pm or email me. HTH

crusty
 
I just had the truck intercooled said:
Sounds like Cory's work, and looks like Cory's work from the hard core section pics you posted. Were you are Cruizer Daze? Thought I saw your truck, but did not get a lot of time to inspect. If this was Corys work I was sorry Cory was not there this year, and hope he attends as a vendor next year. He has skilz...

If not Cory's, whoever built it does good work, and should attend.

Yes, you are correct there is a balance between what can be safely achived, and what is pushing the envelope. Each will determine that from thier stated needs.

gb
Click to expand...
 
tlcruiserman said:
If you have not turned up the fuel at all, they I do not think you are getting any power from your turbo. I have done several of them on 70 series and 42 sereis and until I turn up the fuel the turbo did nothing.
Click to expand...

Not so. Each fuel pump is set up slightly differently. In my case on my '82 BJ60 I have not touched the fuel delivery at all and I can reach 1250 on the pyro pulling a hill. As for power, on the hills described like the one out of Peachland on the Coq., with the turbo I was able to be a full gear higher and 20-30kph faster than non-turbo'd.
On my daughters FJ55/3B turbo she needs some significant fuel adjustments as she does not get very hot on the pyrometer at all.
Every truck and injection pump is different.
 
Sounds like Cory's work, and looks like Cory's work from the hard core section pics you posted. Were you are Cruizer Daze? Thought I saw your truck, but did not get a lot of time to inspect. If this was Corys work I was sorry Cory was not there this year, and hope he attends as a vendor next year. He has skilz...
Click to expand...

Greg,

Yes, you are correct. Cory... AKA... Kodiak Fabrication, built my truck. And yup, I agree.... he does great work.

I literally just drove by Cruizer Daze but couldn't attend as I had other previous commitments. Yeah would have been nice if Cory could have made cruiser days... maybe next year we both will make it out.

Just got the intercooling... etc... done at Specialty Engineering in New West... thrilled with the job they did. Excellent work.

Rob
 
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What was final cost range for the intercooler install super 70? (sorry for the hijack)
 
cruiser_guy said:
Not so. Each fuel pump is set up slightly differently. In my case on my '82 BJ60 I have not touched the fuel delivery at all and I can reach 1250 on the pyro pulling a hill. As for power, on the hills described like the one out of Peachland on the Coq., with the turbo I was able to be a full gear higher and 20-30kph faster than non-turbo'd.
On my daughters FJ55/3B turbo she needs some significant fuel adjustments as she does not get very hot on the pyrometer at all.
Every truck and injection pump is different.
Click to expand...


Agreed, I was speaking of a tuned engine without turbo, then adding turbo, if you don't need to turn up the fuel to take advantage of the turbo then you were probably running more fuel then you could use to begin with. Would you agree?

Michael
 
Well in a Turbo Glide kit instruction ( 3B engine ) said, in big letters, only 3/4 turn to the diesel pump and you rget the proper amount of diesel to burn. I'm not sure if is the right amount, he's car don't have pyro, but the engine runs great with 10 PSI of boost.
 
Super 70 said:
I literally just drove by Cruizer Daze but couldn't attend as I had other previous commitments. Rob
Click to expand...

Towing your trailer if I saw correctly...

Specs on cooler would be appreciated by many in this forum I would suggest...

gb
 
Greg,

Yeah, I was towing my trailer. I don't really have the specs on the cooler as I just drove it in to the shop and had it done. It wasn't something that I had the knowhow or the desire to do myself. My work is too demading and when I am not working I would rather be playing. Do you know Andy from Specialty Engineering? I know he has turbo'd some local cruisers in the past... not sure if he has intercooled other local cruisers.... i think the first turbo he did on a cruiser was as far back as the mid 80's.... not sure what turbo he was using.... definitely wasn't a kit like the AXT though as I know he was surprised at how much boost I am running. Will try and take some pics of the work in the next while and post em. Anyone else around running an intercooler on their 3B with the AXT? I really didn't know who or where to go to get a cooler done on my cruiser.... basically looked at Kinetic motorsports in port kells and then Specialty Engineering in New West. I am always kinda leary going to get work done by a new place when you don't have any previous experience with em. I will say, again, that I am thrilled with the work/results. Workmanship, and materials are awesome. All stainless, no skimping on cheap parts. They also made some nice suggestions for the future that made a ton of sense. I will be having them do an aluminum rad and custom tanks etc. I would highly recommend them if there are others out there looking to have that type of work done and not wanting to do the work/engineering for themselves.
 
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Only thing I have heard about aluminum rads is the possibility of cracking due to off roading, flexing etc?

Not first hand expierence.

Rob







[ They also made some nice suggestions for the future that made a ton of sense. I will be having them do an aluminum rad and custom tanks etc.
 
tlcruiserman said:
Agreed, I was speaking of a tuned engine without turbo, then adding turbo, if you don't need to turn up the fuel to take advantage of the turbo then you were probably running more fuel then you could use to begin with. Would you agree?

Michael
Click to expand...

Since that same pump was the one on my engine when the precup cracked and buggered the engine (pre turbo install) then yes, it probably was over fuelling (even though I was not blowing clouds of black smoke even then)!! :) Although that pump still has the wire on it from the factory and has not been rebuilt/overhauled so I have to assume that it falls within spec's. The injection pump on my daughters truck was gone over when I did the engine rebuild so it too falls within spec. I still say that there is no "magic number" and every engine is different just like people (sort of).
 
crushers said:
i would go with a larger exhaust, sounds like a restriction causing the high EGTs...
Click to expand...

Not on my truck, I run 2 1/2" pipe without any muffler.
 
Radd Cruisers said:
Only thing I have heard about aluminum rads is the possibility of cracking due to off roading, flexing etc?

Not first hand expierence.

Rob
Click to expand...

Rob,

Yeah that was my concern as well. I have been debating the aluminum rad thing for quite some time. Asked Andy, about it when the suggestion was made. He mentioned that the idea was to build a full cradle underneath the whole length of the rad and then fab up some really slick bushing'd mounting brackets. Not sure if any of you know Gary, old white bronco, convertable that is been in one of the offroad mags.... 35's with the twisting front end. Anyway, he has been running one for years with no trouble. The other thing that lends me to believe that I may be Ok in that dept. is that with my subframe and extra cross members on the truck... my frame is really stiff and doesn't flex.... which isn't bad cuz the suspension works so well.

Think I will take the risk and try it out... thanks for the advice.
 
Super 70 said:
Rob,

Yeah that was my concern as well. I have been debating the aluminum rad thing for quite some time. Asked Andy, about it when the suggestion was made. He mentioned that the idea was to build a full cradle underneath the whole length of the rad and then fab up some really slick bushing'd mounting brackets. Not sure if any of you know Gary, old white bronco, convertable that is been in one of the offroad mags.... 35's with the twisting front end. Anyway, he has been running one for years with no trouble. The other thing that lends me to believe that I may be Ok in that dept. is that with my subframe and extra cross members on the truck... my frame is really stiff and doesn't flex.... which isn't bad cuz the suspension works so well.

Think I will take the risk and try it out... thanks for the advice.
Click to expand...
this would definately eliminate that pesky fan hitting shoud problem and would reduce the flexing of the rad in the stupid location that Toyota uses int he 60s and 70s series. the 40s had it done right.
cheers
 
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