Search found 37 matches

by dieselguy86
Sun Jul 21, 2019 5:37 am
Forum: Engines and Exhaust
Topic: 4JB1T cranks but won't start
Replies: 16
Views: 76

Re: 4JB1T cranks but won't start

Is valve lash adjusted?
by dieselguy86
Fri Jul 19, 2019 9:11 am
Forum: Engines and Exhaust
Topic: 4JB1T cranks but won't start
Replies: 16
Views: 76

Re: 4JB1T cranks but won't start

Could always try a puff of ether. If it fires compression is good.

You swapped it into an 89 trooper, did check that the fuel shutoff solenoid on the pump is on with key on? Sounds like it is since you say you have fuel to the injectors, but might be worth checking
by dieselguy86
Tue Jul 16, 2019 10:57 pm
Forum: Engines and Exhaust
Topic: 4JB1T Compound turbo setup
Replies: 18
Views: 85

Re: 4JB1T Compound turbo setup

Excellent craftsmanship and quality. You did a great job making sure things were built with purpose, from the Wastegate outlet merging on an angle, to the bellows for stress free expansion, well done! Also love the v band, makes removal/ installation alot quicker.
by dieselguy86
Tue Jul 16, 2019 4:51 pm
Forum: Engines and Exhaust
Topic: Modding my 4jb1t for 250hp
Replies: 56
Views: 284

Re: Modding my 4jb1t for 250hp

No i believe the 6.6 duramax is a 7 hole nozzle. Probably not going to use that nozzle, i just wanted to check if it would fit. The coating would help the life of the injector tremendously.
by dieselguy86
Mon Jul 15, 2019 5:46 pm
Forum: Engines and Exhaust
Topic: Modding my 4jb1t for 250hp
Replies: 56
Views: 284

Re: Modding my 4jb1t for 250hp

So did some more exploring/ research today. While looking at the list of nozzles, i noticed that the common rail nozzles had the same size holes, amount of holes, and degree of spray. Difference was they had what is called a dlc, diamond-like coating. This is because here in the U.S. we switched to ...
by dieselguy86
Sun Jul 14, 2019 7:09 pm
Forum: Engines and Exhaust
Topic: Modding my 4jb1t for 250hp
Replies: 56
Views: 284

Re: Modding my 4jb1t for 250hp

I have round bowl pistons to put in. Was just going to de-lip them and re profile the cone in the bowl to a more modern design. Going to need more area in the bowl to handle the extra fuel/ heat. Not going to change the bowels depth or diameter, just refine the problem areas, and then ceramic coat ...
by dieselguy86
Sun Jul 14, 2019 4:43 pm
Forum: Engines and Exhaust
Topic: Modding my 4jb1t for 250hp
Replies: 56
Views: 284

Re: Modding my 4jb1t for 250hp

How did you lower compression? Thicker head gasket or did you machine the pistons? Was thinking of possibly machining some valve relief and the bowl some to lower mine to somewhere around 17:1.
by dieselguy86
Sun Jul 14, 2019 12:36 am
Forum: Engines and Exhaust
Topic: Modding my 4jb1t for 250hp
Replies: 56
Views: 284

Re: Modding my 4jb1t for 250hp

Just make sure it's the correct rotation. I bought a 12mm a pump and found out it was a right hand rotation, when i needed a left hand. If i remember right, biggest plungers and barrels for left hand spin is 10mm. Im probably wrong on that.<br/><br/>Now that you mention it, i have an a pump off a ...
by dieselguy86
Sat Jul 13, 2019 9:01 pm
Forum: Engines and Exhaust
Topic: Modding my 4jb1t for 250hp
Replies: 56
Views: 284

Re: Modding my 4jb1t for 250hp

The flange on my a pump was to wide for that adapter. My ve pump has a 2 bolt flange, where my a pump has 4, and that is the problem. If it was 2 instead of 4, it would fit. <br/><br/>My a pump doesn't have a tach pickup, and needs a separate switch to activate the 12v shutoff solenoid. I'll just ...
by dieselguy86
Sat Jul 13, 2019 2:23 am
Forum: Engines and Exhaust
Topic: Modding my 4jb1t for 250hp
Replies: 56
Views: 284

Re: Modding my 4jb1t for 250hp

Just for anyone who might be thinking of it, an A pump will not bolt up to the timing case on a 4jb1. I mean it could with some machining, but way too much trouble than it would be worth.