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3B compound turbo, 25psi boost!?!
- Thread starter gerg
- Start date
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- Thread starter
- #62
Sorry for the late reply but life is busy. So far I am very happy with the results. I will be ceramic coating and polishing a new high nickle head in the spring as well as add a new custom cam. I will also change out the small turbo for a smaller one (td04-13t) and the large turbo for a larger one (t3-60 trim). Ill see if I can wangle an intercooler before the family goes camping as well.
g
g
- Thread starter
- #64
A fella down the road from me just happens to do custom grinds for dodge cummins and stuff. I asked him about doing a wild cam for my little 3B and he seemed quite positive. When I get the cam from him I will post all of his info and stuff up for everyone to enjoy. I specified that I did not want to run heavy springs as I made the fatal choice of rebuilding a 3 bearing cam model instead of the stronger 5 bearing 3B. I should be getting the cam back in a few weeks or so. He reciently showed me a video of a 800hp 4bt cummins red neck mud rail dragster thingy.. was pretty neat.
Custom Cummins Cam Shafts - 5.9L B Series Testimonials - Colt Cams
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Custom Cummins Cam Shafts - 5.9L B Series Testimonials - Colt Cams
g
just cruising
check out the boost guage
check out the boost guage
you can see the pyro just barely, she 's at about 650-700 post turbo so i add about 300. not too hot
- Thread starter
- #67
Man that is a lot of boost for one turbo. What are the specs off it? Have you ever measured your boost temps? Have you maxed your pump out for fuel? What RPM was that?
I just got a neat little multi meter with a k-probe that goes to 400C for 20$ from princess auto. Its accurate to about +/- 3C, so its accurate enough for me. I have some time off this Christmas and will do some measurements and maybe pop in the cam if I can steal away some spare time from hob nobbing parties... man I hate parties
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I just got a neat little multi meter with a k-probe that goes to 400C for 20$ from princess auto. Its accurate to about +/- 3C, so its accurate enough for me. I have some time off this Christmas and will do some measurements and maybe pop in the cam if I can steal away some spare time from hob nobbing parties... man I hate parties
g
How are your B motors going handling this boost? Any side effects as yet?
cruisedeisel please do share your specs and at what rpm your reaching maximum boost.
I have a 13BT with a CT26, intercooled, it normally runs up to 16psi of boost but wont go much higher without more fuel, unfortunately it is already reaching 700c pre turbo.
cruisedeisel please do share your specs and at what rpm your reaching maximum boost.
I have a 13BT with a CT26, intercooled, it normally runs up to 16psi of boost but wont go much higher without more fuel, unfortunately it is already reaching 700c pre turbo.
- Thread starter
- #69
Here are some pics of my cam I just got back from the cam grinder machinist guy.
The new cams intake lobe. It has more lift, but is relatively unchanged.
Here is the exhaust lobe... much more duration and lift. I as specified to increase the breathing on the exhaust side. OK so the exhaust lobe pics is out of order and is further down below, but you get the idea.
He also beveled the edges to prevent catching on the lifter. He said that poor quality grinds, such as the one I provided him ugg, can catch on the lifter edge and break a big chunk off causing major damage.
One thing that is weird is he said that the Cruiser gas cams and the diesel cams share the exact same profiles on their lobes... wtf?
Actually he said WTF #$% ##$%% Toyota!!
And then was happy cus his grind will be much better... hehe
He also parkerizes his stuff.
g
The new cams intake lobe. It has more lift, but is relatively unchanged.
Here is the exhaust lobe... much more duration and lift. I as specified to increase the breathing on the exhaust side. OK so the exhaust lobe pics is out of order and is further down below, but you get the idea.
He also beveled the edges to prevent catching on the lifter. He said that poor quality grinds, such as the one I provided him ugg, can catch on the lifter edge and break a big chunk off causing major damage.
One thing that is weird is he said that the Cruiser gas cams and the diesel cams share the exact same profiles on their lobes... wtf?
Actually he said WTF #$% ##$%% Toyota!!
And then was happy cus his grind will be much better... hehe
He also parkerizes his stuff.
g
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- Thread starter
- #70
Here is the lifter beveled and crowned just a bit for more even wear and no catching on the cam. He said that only 3 of my 8 brand new lifters had any crowning what so ever. Again he swore and said stock stuff sucks.
Everything will be moly coated as well.
g
Everything will be moly coated as well.
g
Were they new toyota lifters? I am suprised by their lack of quality, they all should have a slight crown to promote the lifter to spin in the bore.
thats cruisin 130kph on the hwy, usually 25-2600 rpm. not many people pass me. i've put almost 100,000kms on this turbo setup. i've blown one throttle body/ intake gasket. i'll try to take video but have no you tube account. not hard to set up, i know.
the pump has been turned 2 full turns from stock, never gone all the way. intercooler would be good for the mountain climbs and trailer pulls. coming soon.
i've held it at that boost and rpm for 4 hours straight before. long road trips, not a problem.
the pump has been turned 2 full turns from stock, never gone all the way. intercooler would be good for the mountain climbs and trailer pulls. coming soon.
i've held it at that boost and rpm for 4 hours straight before. long road trips, not a problem.
i never, NEVER run my truck cold, warm up 10 minutes in the morning and always cool down after driving 15 secs to 10 minutes depending on how hard i've run the engine. cheers!
i wanna know how this cam works out for you? sounds promising
- Thread starter
- #76
Yeah im hoping it is an improvement. Is your turbo a t3? stage 1 .48 a/r? I think it would have to be something like that. What is your compressor? 60trim?
The cam guys is pretty picky about his stuff and critical of poor quality work. Yes my lifters were brand new.
Ill try and get the cam in this Dec but its kinda busy, my dad is reciently quite ill so...
g
The cam guys is pretty picky about his stuff and critical of poor quality work. Yes my lifters were brand new.
Ill try and get the cam in this Dec but its kinda busy, my dad is reciently quite ill so...
g
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will they make one for the 12ht?
i wonder if they will make a performance camshaft for the 12ht, i will call them when they open. any particular person i should talk to. my 12ht is getting rebuild this is the time to make that change. if they can make one and not too much compromise of reliability.
thanks you for sharing this info
i wonder if they will make a performance camshaft for the 12ht, i will call them when they open. any particular person i should talk to. my 12ht is getting rebuild this is the time to make that change. if they can make one and not too much compromise of reliability.
thanks you for sharing this info
- Thread starter
- #79
These pics are from the same cam before he worked on it.
Here is one lobe that he said is a good candidate for catching the edge of the lifter.
This damage he said could have been origionaly from a relatively small amount of metal broken from the edge but caused massive wear as it got ground in between the lifter. Its hard to see but all of the hardness is worn off on the pokey end of the lobe.
He also recommends running a zink additive as most modern oils have decreased the amount of zink due to roller lifters not needing it in newer cars. He said over the last few years flat lifter cams of all makes and types have been comming to him with terrible wear. He attributes this in part to low zink.
g
Here is one lobe that he said is a good candidate for catching the edge of the lifter.
This damage he said could have been origionaly from a relatively small amount of metal broken from the edge but caused massive wear as it got ground in between the lifter. Its hard to see but all of the hardness is worn off on the pokey end of the lobe.
He also recommends running a zink additive as most modern oils have decreased the amount of zink due to roller lifters not needing it in newer cars. He said over the last few years flat lifter cams of all makes and types have been comming to him with terrible wear. He attributes this in part to low zink.
g
from a 70's mercedez 5 cylender turbo diesel. engine was blown but turbo seemed fine. its an air research. t3 copy, i think?