12v Minivan, not enough power-4 problems - Page 2 - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 02-11-2019, 05:28 PM   #26 (permalink)
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Quote:
Originally Posted by rockyota83 View Post
you should probably be posting this on one of the many different cummins specific forums

youve got compound turbos with an o-ringed arp head, you should have all the power you want, have you tried adjusting your low boost fuel levels?

https://www.dieseltruckresource.com/...-wheel-176337/
Thanks, I have done a bit of adjusting with the pump, but by no means has it been enough. The recent inaugural 2500 mile road trip was done mostly below zero, so I was a bit reluctant to sit at a gas station with the pump open without full motor control of my fingers. But I definitely agree that tuning is contributing to my issues. However, having less of these problems before the engine build (namely fuel economy) I think this can't be completely responsible.

And I agree with the dedicated cummins and diesel forums, but I applied for accounts on 5 different ones, and they all have administrator supervision on early posts, and all but one of them has yet to approve my initial post and comments I submitted several weeks ago. And I seem to find the most ingenuitive people doing interesting/strange builds on here, so I figured this would be a great community to throw my project into the mix with.
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Old 02-11-2019, 07:11 PM   #27 (permalink)
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I REALLY want to see pictures! This thing sounds kinda cool in a red headed step child kinda way.
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Old 02-11-2019, 07:22 PM   #28 (permalink)
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Originally Posted by 12v Minivan View Post
And I seem to find the most ingenuitive people doing interesting/strange builds on here, so I figured this would be a great community to throw my project into the mix with.
'swhat got me to make an account here
still don't own a 4x4

Post some goddamn pics, loves me some first gen caravans
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Old 02-11-2019, 07:49 PM   #29 (permalink)
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marine pistons should be fine, but ditch the 20 over head gasket, unless you decked the block or the head alot. its killing your compression. not sure how much the marine pistons lower it, mainly they have a larger bowl for the wider spray of marine injectors or higher timing. anything over 18-20 degrees of timing is going to kill your bottom end for a stickshift.
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Old 02-12-2019, 08:25 AM   #30 (permalink)
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A couple pics stolen from IG for you fawkers.





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Old 02-12-2019, 09:02 AM   #31 (permalink)
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Interesting. I've never seen a cross-over compound turbo setup before.
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Old 02-12-2019, 10:36 AM   #32 (permalink)
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I've never seen anything like that...period.
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Old 02-12-2019, 04:19 PM   #33 (permalink)
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Originally Posted by Mikel View Post
Interesting. I've never seen a cross-over compound turbo setup before.
It can work, but sometimes you gotta size stuff a little bit smaller to compensate the heat loss from the crossover setup.
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Old 02-12-2019, 04:47 PM   #34 (permalink)
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It can work, but sometimes you gotta size stuff a little bit smaller to compensate the heat loss from the crossover setup.
Reminds me of cars I've seen with (really) remote turbos. Thermal and frictional losses must be enormous.

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Last edited by Mikel; 02-12-2019 at 04:47 PM.
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Old 02-12-2019, 05:06 PM   #35 (permalink)
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Originally Posted by v30crewcab View Post
marine pistons should be fine, but ditch the 20 over head gasket, unless you decked the block or the head alot. its killing your compression. not sure how much the marine pistons lower it, mainly they have a larger bowl for the wider spray of marine injectors or higher timing. anything over 18-20 degrees of timing is going to kill your bottom end for a stickshift.
Have you run marine pistons before or driven a rig that did? I can’t remember what I set my timing at but it was exactly stock what it said on the placard. I intended to start there then bump it up after but with the low low end power I felt like more timing was the last thing I need. Granted my problems sound way smaller than op but sounds familiar with the marine pistons and 370s.
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Old 02-14-2019, 08:25 PM   #36 (permalink)
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I've never seen anything like that...period.
Me neither, still don't know what to think of it
I'd like to see side pics, and some explanation of wtf is going on. I was really hoping this was maroon and wood paneled on some gold mods somehow proportioned just right
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Old 02-15-2019, 08:47 AM   #37 (permalink)
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Side pic.... I posted the same one twice by accident above.

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