Getting the right gauges....

How to make it go fast

Moderators: Greenleaf, KTA, BC847, Richie O

Getting the right gauges....

Postby JimmieD » Wed Jan 31, 2007 10:48 am

Hi guys,

Looking at Ispro gauges for my old Dodge with stock 4BT. I have, but haven't installed, an HTT Stage II turbine and will be turning up the screws a bit. Will be used for a lot of towing, pretty heavy load. Looks like good prices at Oregon Fuel Injection.

http://www.o-f-i.com/index.php?pid=20

Will be getting R3607GR-6K Pyrometer but not sure on Boost. They have 0-15, 0-30, 0-40 lbs boost. At some point I may quit fulltime RV towing and turn up the screws even more, but probably never crank it up real super high. What range of boost gauge would cover it for the tweaked stock 4BT with Stage II on a H1-C? 0-30? Any ideas where this thing will be on boost pressures? Thanks...

JimmieD
JimmieD
fuel screw!!!!
 
Posts: 126
Joined: Sat Jan 06, 2007 12:02 pm
Location: Mid-Cal

Postby bgilbert » Wed Jan 31, 2007 11:11 am

For a 6b I wouldn't go less than a 60psi boost gauge. For a 4b I would get at least a 40psi gauge. You never know how deep you'll go in the long run. Never get a 30psi gauge for a 6b, you'll be buying twice in the long run.
Bill Gilbert
85 D350 crew with 90 6BT intercooled Getrag 3.07's
93 D350 single cab Getrag 3.54's.
bgilbert
14mm rotor
 
Posts: 2253
Joined: Wed Jan 03, 2007 5:04 pm
Location: Terre Haute, Indiana

Postby JimmieD » Wed Jan 31, 2007 12:49 pm

Thanks, Bill, that's exactly what and why I needed to know!
JimmieD
fuel screw!!!!
 
Posts: 126
Joined: Sat Jan 06, 2007 12:02 pm
Location: Mid-Cal
Top

Postby JLeonard » Wed Jan 31, 2007 3:08 pm

Yes get a 60 psi gage as Bill said....I have been pegging my 30 for a while now...some day the needle will snap off. :lol: :lol:
Then Ill get a 60
91 D250 w/modified Cummins, 89 D250 donor (future boat engine)
User avatar
JLeonard
fuel screw!!!!
 
Posts: 111
Joined: Wed Jan 03, 2007 4:55 am
Location: Connecticut
Top

Postby bgilbert » Wed Jan 31, 2007 5:25 pm

J, he's got a 4b. I think a 40psi unit would be plenty. I don't think 4b's run as much boost. With a 60psi unit, it maybe hard to read on the bottom end of the scale.
bgilbert
14mm rotor
 
Posts: 2253
Joined: Wed Jan 03, 2007 5:04 pm
Location: Terre Haute, Indiana
Top

Postby KTA » Wed Jan 31, 2007 5:58 pm

A 4b will run just as much boost as a 6b with the same fueling. Just cuz you have 2 less cylinders worth of fuel, you also dont have two cylinders needing air, so your restriction is more for the same sized turbo actually, but you wouldnt drive it as hard cuz you arent moving as much air. Totally confused yet. LOL Basically an Equivelent sized turbo for the displacment and same fuel will make same boost 4b or 6b.
Fleet of Junk: 1989 D350 627rwhp 1300 tq B-1/Hx60 twins, KTA pump/injectors, ported head, BIG fuel supply. 13.75@ 109.5mph 1/4: 1992 W350 Cab-chasis, 1993 W350 ext cab cust.370 inj Hx40/16cm 290rwhp hydroboost brakes,1984 D350 crew-cab another project.
User avatar
KTA
diesel guru/mod
 
Posts: 1855
Joined: Thu Jan 04, 2007 2:23 pm
Location: Shelby County, Ky
Top

Postby bgilbert » Wed Jan 31, 2007 6:57 pm

I learn something everyday.. well sometimes:D.
Bill Gilbert
85 D350 crew with 90 6BT intercooled Getrag 3.07's
93 D350 single cab Getrag 3.54's.
bgilbert
14mm rotor
 
Posts: 2253
Joined: Wed Jan 03, 2007 5:04 pm
Location: Terre Haute, Indiana
Top

Postby JimmieD » Wed Jan 31, 2007 8:07 pm

Well now, asked one question and got an answer plus another that's been bugging me!

I haven't verified it yet as I'm bone stock, but: seems that with the 1st Gen 6BT's H-1C turbo and the 6BT's VE pump setup on an engine only 2/3 the size that there might be some near incredible power potential there? HTT said that with my current 16CC exhaust housing and their Stage II compressor that I would end up with something very close to a strong Hy35 or better, and that on a 3.9L engine!

Only drawback I see is that less exhaust output might decrease spooling? But, from what you're asying that may be a non-issue. Any further info would be much appreciated. Thanks!
JimmieD
fuel screw!!!!
 
Posts: 126
Joined: Sat Jan 06, 2007 12:02 pm
Location: Mid-Cal
Top

Postby KTA » Wed Jan 31, 2007 9:44 pm

The 215 and 250hp 4BTA's use an Hx35 12cm, so you should have no problem with it, but of course it will spool slower than the same turbo would on a 6bt with the same fueling.
Fleet of Junk: 1989 D350 627rwhp 1300 tq B-1/Hx60 twins, KTA pump/injectors, ported head, BIG fuel supply. 13.75@ 109.5mph 1/4: 1992 W350 Cab-chasis, 1993 W350 ext cab cust.370 inj Hx40/16cm 290rwhp hydroboost brakes,1984 D350 crew-cab another project.
User avatar
KTA
diesel guru/mod
 
Posts: 1855
Joined: Thu Jan 04, 2007 2:23 pm
Location: Shelby County, Ky
Top

Postby JimmieD » Wed Jan 31, 2007 11:02 pm

I've heard of the 250 HP marine, but never the 215 HP!? That does indeed sound sweet. Any further info: application, parts to get there etc.?
JimmieD
fuel screw!!!!
 
Posts: 126
Joined: Sat Jan 06, 2007 12:02 pm
Location: Mid-Cal
Top

Postby KTA » Thu Feb 01, 2007 5:51 am

I have a friend that researched them and he has the CPL number if you want it. I know it was a P7100 motor with a water jacket aftercooler. It was the highest rating one he could find in the cummins catalog. He wants to build one and put it ina a 80's Chevy in the hopes of getting 20+mpg with it.
Fleet of Junk: 1989 D350 627rwhp 1300 tq B-1/Hx60 twins, KTA pump/injectors, ported head, BIG fuel supply. 13.75@ 109.5mph 1/4: 1992 W350 Cab-chasis, 1993 W350 ext cab cust.370 inj Hx40/16cm 290rwhp hydroboost brakes,1984 D350 crew-cab another project.
User avatar
KTA
diesel guru/mod
 
Posts: 1855
Joined: Thu Jan 04, 2007 2:23 pm
Location: Shelby County, Ky
Top

Postby sdstriper » Thu Feb 01, 2007 6:41 am

Another thought, I would buy that gauge in 0-60 range for the resale value to 6BT folks.
1989 D250, 727, 3.07, BHAF, 4" exhaust, Usual Suspect Gauges, tuned VE, OSPP
sdstriper
fuel screw!!!!
 
Posts: 297
Joined: Fri Jan 05, 2007 4:57 pm
Location: Sioux Falls, SD
Top

Postby JimmieD » Thu Feb 01, 2007 7:47 am

Thanks, KTA! Mine's an 0858.

I've been driving this truck for 30 years now with different gasser drivetrains. I figure with the 4BT and NV4500 etc. that I won't be changing it again except to dial it in and refine it. It's built to last longer than I will. I'd have to think long and hard about the P7100 but would probably stick with a VE, maybe pick up a spare rebuilt sometime just in case. Seems like 175-200 HP with accompanying torque would still give me a very reliable truck, driving it like a keeper, and be lots of fun with good mileage.

Cummins Rep says it has 7mm injectors and NOT the ones that are supposed to be in it. It has 3912468's and he couldn't tell me what the difference was between the spec'd injectors and the ones I have. Are 7mm the standard 1st Gen size? If so I thought maybe 190's or slightly bigger would be nice. Ideas?

Thanks, sd striper. I doubt I'd get rid of it later as the truck is a keeper...but good thought!
JimmieD
fuel screw!!!!
 
Posts: 126
Joined: Sat Jan 06, 2007 12:02 pm
Location: Mid-Cal
Top

Postby PToombs » Thu Feb 01, 2007 4:59 pm

There's a bunch of 4bt info on here-http://www.4btswaps.com/forum/index.php
These guys are doing all kinds of stuff, swaps, upgrades, etc.
pete

Just enough power to break everything behind the crankshaft.
User avatar
PToombs
14mm rotor
 
Posts: 11367
Joined: Sun Jan 07, 2007 6:13 pm
Location: Syracuse NY. Snow central!
Top

Postby JimmieD » Thu Feb 01, 2007 8:52 pm

Thanks, Pete! I'll go check it out. It can be pretty hard to find information and I'm thankful that the Dodge Cummins 1st Gen website is willing to help! thanks....

JimmieD
JimmieD
fuel screw!!!!
 
Posts: 126
Joined: Sat Jan 06, 2007 12:02 pm
Location: Mid-Cal
Top

Next

Return to The good stuff

Who is online

Users browsing this forum: No registered users and 13 guests