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'77 Bronco 4bt Conversion

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'77 Bronco 4bt Conversion
snipes243 Offline
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#21
05-02-2008, 09:42 PM (This post was last modified: 05-02-2008, 09:52 PM by snipes243.)
This is pretty impressive to me:notworthy: Not to hijack or anything but what horsepower and torque numbers you get with this type of conversion. I'm pretty new to diesel, sounds like cool conversion.
68 Half cab
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High Pressure Offline
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#22
05-03-2008, 08:10 AM (This post was last modified: 05-03-2008, 08:13 AM by High Pressure.)
The little 3.9L 4bt is tagged at a whopping 105hp @ 2,500RPM... and 260 lbs/ft of torque @ 1,700RPM.

Hope to some day take it to around 180hp and 400 ftlbs of torque. I plan to stay with the Bosch VE pump but will change out the turbo or modify the current turbo for increased rotor speeds (boost pressure).

It won't be able to take on those Ford engines in a race...but it should provide low rpm torque.
'77 EB, 2.5" SL, 2"BL, Cummins 4bt, C4 w/Art Carr manual Valve Body, 35" BFG KM2s
http://www.youtube.com/watch?v=M_HqhiW38ik
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trkbilder Offline
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#23
05-03-2008, 08:27 AM
Confusedcratchhe:That's cool,man. Keep us posted on improvements. I love diesels!!:notworthy:
Psalms 27:1
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K45 Offline
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#24
05-06-2008, 05:12 PM
That is super nice. That is what I was wanting to do to my bronco whenever I get one is a 4bt conversion. :xyxthumbs:
02 VW jetta TDI/ 79 Chevy K5 on 1 tons/ 69 Ford Bronco
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High Pressure Offline
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#25
05-06-2008, 09:21 PM
Thanks ... I'm definitely going to have to keep the exhaust work covered in MUD! Running this 4” exhaust has tested my patience...:banghead:....and has taken twice as long as I planned.....still have to install 2 hangers…
'77 EB, 2.5" SL, 2"BL, Cummins 4bt, C4 w/Art Carr manual Valve Body, 35" BFG KM2s
http://www.youtube.com/watch?v=M_HqhiW38ik
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High Pressure Offline
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#26
05-13-2008, 09:06 PM
Finally got some BFG KM2 35x12.5x17 mounted to 17" rockcrawlers.... The Bronc is close to hitting on the roof when I drive it into the garage!


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'77 EB, 2.5" SL, 2"BL, Cummins 4bt, C4 w/Art Carr manual Valve Body, 35" BFG KM2s
http://www.youtube.com/watch?v=M_HqhiW38ik
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johnpaulgolf Offline
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#27
05-13-2008, 09:13 PM
Man that thing is sweet...hope I can see it in person when I come to town next time.
Waiting to build or BUY another legend! :thefinger:
Always an EB fan, lover and freak :notworthy:

1985 Yoda 4Runner :xyxthumbs:
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High Pressure Offline
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#28
05-13-2008, 09:23 PM
johnpaulgolf Wrote:Man that thing is sweet...hope I can see it in person when I come to town next time.

Thanks you can stop by to see it any time.. Hopefully, it will be on the road real soon for extended drives... just recently installed the auxillary tank. That gives the Bronc a 26 gallon total capacity. So with a 22 MPG estimate we should have a range of 500 miles before needing to buy $4.25 per gallon diesel....
'77 EB, 2.5" SL, 2"BL, Cummins 4bt, C4 w/Art Carr manual Valve Body, 35" BFG KM2s
http://www.youtube.com/watch?v=M_HqhiW38ik
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High Pressure Offline
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#29
05-13-2008, 09:34 PM
Here's some photos of the mag pickup & the Dakota digital signal converter for counting teeth on the flexplate. I needed to set the gap on the sensor before putting the C4 back in.. Hope to pickup an Autometer 5K RPM diesel tach soon... Don't laugh... 5K is all it needs... especially since the little diesel is governed at 2,800 RPM at the moment.. but we can improve that a little.. for $10.00 we can take it to 3,200 rpm!!! That's using over 60% of the gauge...Confusedcratchhe:


Attached Files Image(s)
           
'77 EB, 2.5" SL, 2"BL, Cummins 4bt, C4 w/Art Carr manual Valve Body, 35" BFG KM2s
http://www.youtube.com/watch?v=M_HqhiW38ik
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blazinchuck Offline
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#30
05-13-2008, 11:56 PM
you will like that 3200 c'mon...I know I do!!!!


so when we meeting in person???? I'll be in the bronco tomorrow!!Chuck

ps...numbers in the who's who
77 built 306,Trickflow Cam/Alum Heads/dome pistons/10:1comp,nv3550,duff long arms,3.5" lift,family cage,protofab rear bumper,twin sticked, and 35KM2'sG.D.I.
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