Should I turn up the mechanical IP on my 93 6.5TD? - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Lounge (3) Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > GM Diesel Engines > 6.5L Diesel Engine
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Auto EscrowAuto LoansInsurance

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Closed Thread
 
LinkBack Thread Tools
Old 08-30-2007, 03:07 PM   #1 (permalink)
Veggieburninburban
Diesel Technician
 
Veggieburninburban's Avatar
 
Join Date: Feb 2007
Location: Salt Lake City, UT
Posts: 325
iTrader Score: 0 reviews

Should I turn up the mechanical IP on my 93 6.5TD?

I have the IP turned up on my 6.2 and really enjoy the extra drivability it provides. When I'm puting my 6.5 together, I figured that it would be a good time to crank up the fuel delivery a bit, but thought that I should ask for advice first. I turned the 6.2's pump up about 3/8 of a turn and it's still completely smoke free. Would a similar amount corellate to a 6.5 turbo IP too?
__________________
85 GMC K2500 Suburban: 6.2 J-code diesel, TH400, NP208, 4.10 gears, rusted out dual exhaust, runs on biodiesel and veggie oil in a heated 2-tank system, named Klunky.
93 Chevy K3500: 6.5 Turbo, long-bed X-cab, 5-speed manual, 4x4, named Grumbly.
86 Chevy K5 Blazer: 6.2 diesel, 700R4, NP208, 3.73 gears. Going to be my Moab trruck. Soon to have a 6" lift. Named Kiwi.
02 Ford F350 Crew Cab: (The wife's minivan) 7.3 Powerstroke with 4" lift, 5" stainless turbo-back exhaust, AirRaid intake. Named Iron-Man.
Offline  
Quick reply to this message
Sponsored Links
Advertisement
 
Old 08-30-2007, 03:12 PM   #2 (permalink)
Veggieburninburban
Diesel Technician
 
Veggieburninburban's Avatar
 
Join Date: Feb 2007
Location: Salt Lake City, UT
Posts: 325
iTrader Score: 0 reviews

Oh, yeah, I have a boost gauge and EGT gauge to install at the same time. My turbo is healthy with no shaft play at all. I am probably going to make a mechanical wastegate controller to get a little bit more boost.

So, I guess after all of my humming and hawwing, what I really need to know is what are the hard numbers for how much boost and how much extra fuel (measured in x/8 of a crank on the IP's fuel delivery screw) would give me a mild increase in power (and fun)?
__________________
85 GMC K2500 Suburban: 6.2 J-code diesel, TH400, NP208, 4.10 gears, rusted out dual exhaust, runs on biodiesel and veggie oil in a heated 2-tank system, named Klunky.
93 Chevy K3500: 6.5 Turbo, long-bed X-cab, 5-speed manual, 4x4, named Grumbly.
86 Chevy K5 Blazer: 6.2 diesel, 700R4, NP208, 3.73 gears. Going to be my Moab trruck. Soon to have a 6" lift. Named Kiwi.
02 Ford F350 Crew Cab: (The wife's minivan) 7.3 Powerstroke with 4" lift, 5" stainless turbo-back exhaust, AirRaid intake. Named Iron-Man.
Offline   Quick reply to this message
Old 08-30-2007, 07:00 PM   #3 (permalink)
confuzed_guy
Diesel Technician
 
Join Date: Aug 2005
Location: New York :(
Posts: 441
iTrader Score: 0 reviews

Are there different mechanical IPs for the turbo version 6.5 as opposed to the non-turbo version 6.5? I would think that if the answer is yes, then you would want a turbo IP version as it is already set for increased fuel. That way the turning up of the IP wouldn't be so drastic.

If not, then I guess this post was just a waste of everyones time Sorry!
__________________

Offline   Quick reply to this message
Old 08-30-2007, 07:19 PM   #4 (permalink)
chillyw2
Diesel Technician
 
chillyw2's Avatar
 
Join Date: Jun 2006
Location: Modesto,CA
Posts: 196
iTrader Score: 0 reviews

I turned mine up about 1/4 turn and got some smoke but higher egt's. I also had straight pipe exhaust. I didn't care for the outcome - not much more power. I definetely would not do it if you haul anything heavy.
__________________
2002 2500hd 4x4 cc lb 6" lift D/A Flashpaq on performance level- very impressed
Now detuned to tow/performance due to limp- still impressed though Banks Ram-Air intake Banks cat back and MBRP front pipe

Member of IBEW 1245. POWER TO THE PEOPLE!
Offline   Quick reply to this message
Old 08-31-2007, 09:48 AM   #5 (permalink)
Veggieburninburban
Diesel Technician
 
Veggieburninburban's Avatar
 
Join Date: Feb 2007
Location: Salt Lake City, UT
Posts: 325
iTrader Score: 0 reviews

I do tow from time to time, so maybe I'll just leave well enough alone. The power from the 6.5 is so much better than my 6.2, so that is an improvement as is!
__________________
85 GMC K2500 Suburban: 6.2 J-code diesel, TH400, NP208, 4.10 gears, rusted out dual exhaust, runs on biodiesel and veggie oil in a heated 2-tank system, named Klunky.
93 Chevy K3500: 6.5 Turbo, long-bed X-cab, 5-speed manual, 4x4, named Grumbly.
86 Chevy K5 Blazer: 6.2 diesel, 700R4, NP208, 3.73 gears. Going to be my Moab trruck. Soon to have a 6" lift. Named Kiwi.
02 Ford F350 Crew Cab: (The wife's minivan) 7.3 Powerstroke with 4" lift, 5" stainless turbo-back exhaust, AirRaid intake. Named Iron-Man.
Offline   Quick reply to this message
Old 08-31-2007, 10:05 AM   #6 (permalink)
daustin
Diesel Specialist
 
daustin's Avatar
 
Join Date: Mar 2007
Location: Woodstock, Ga
Posts: 609
iTrader Score: 0 reviews

I fabbed a adjustable wg controller for my '93, had the GM-3 turbo on it then and bumped it to about 10psi. Then i turned up the fuel 1/8 turn, made a great improvement. I'm installing a GM-8 this weekend, should be interesting to see what that looks/feels like. I've got gauges, and i think the increased boost & more fuel go hand-in-hand. To tune it you'll have to watch the boost & pyro to get it in good shape. Good luck.
Don
__________________
1993 Chevy Silverado 3500 6.5/4L80E, 4.10's
Cold Air Duct Mod, Snorkle Removed,
3" downpipe, straight exhaust, GM-8 Turbo,
New injectors, adj boost controller, ported intake, full guages, SSD DMAX fan/clutch/180 thermo, 1/4 turnup on DB2-4911.
1997 Chevy Silverado Vortec
1993 GMC SLE 1500 350/4L60E
1968 427 Corvette, matching numbers
1969 Rally Sport Camaro
Offline   Quick reply to this message
Old 08-31-2007, 07:44 PM   #7 (permalink)
Tracy
Diesel Specialist
 
Tracy's Avatar
 
Join Date: Jan 2006
Location: Okanagan BC. Canada
Posts: 764
iTrader Score: 0 reviews

Without a better than factory exhaust, wastegate controller I wouldn't touch the fuel just yet.

Daustin I'll be interested in your results of the turbo swap.
__________________
1993 F 6.5 turbo/desiel 3/4 ton HD, long box, 2wd, 4L80E trans., 3:42 rear gears, 170,000 miles, Heath 4" exhaust, dual thermastate/HO water pump upgrade, DB2 pump turned up 1/4 turn, 97+ air cleaner, removed snorkle, Autometer EGT/Trans/Boost gauges, manual torque converter lockup switch, Heath turbo master, Okanagan BC. Canada

86 Monte Carlo SS, Original Owner 55000 miles. 2002 Dodge Dually 3500 24v cummins
00 Dakota Sport 90000kms 4.7l, 97 Grand Prix GT, 05 Bigfoot truck camper, 56 Ford f600, 02 Polaris Scrambler 400, 97 Polaris 900 watercraft, 97 Yamaha 700 Mountain Max.
Offline   Quick reply to this message
Old 08-31-2007, 09:12 PM   #8 (permalink)
daustin
Diesel Specialist
 
daustin's Avatar
 
Join Date: Mar 2007
Location: Woodstock, Ga
Posts: 609
iTrader Score: 0 reviews

I'm hoping that with the long weekend i can get her running. With the GM-3 and std wastegate controller it ran ok, but didn't tow up to my expectations. I fabbed an adjustable controller, but didn't tow with it and decided it was time for injectors..etc. It ran better with the boost cranked up some, i had about 4-5 psi with the factory setup, and with the adjustable one i pumped it to 9 psi (with some reccomendations) and 1/8 on the 4911. I'm hyped on seeing what it's like with the -8 and the new downpipe. I've fabbed a mechanical actuator for the -8 as well, another $15 and an hour. hehehe Have to see if the spring i chose is ok for the application. (secret but avail at any auto parts store, i'll post if the results are ok) I've been working out of town, 61-65 hours/week and only back home for 24-36 hours on the weekends. I lack straightening the A/C radiator fins, re-installing the radiator and new downpipe, new balancer/pully and SSD dmax fan/HD clutch and fire her up.
I'll post with my "butt-dyno" results.
Don
__________________
1993 Chevy Silverado 3500 6.5/4L80E, 4.10's
Cold Air Duct Mod, Snorkle Removed,
3" downpipe, straight exhaust, GM-8 Turbo,
New injectors, adj boost controller, ported intake, full guages, SSD DMAX fan/clutch/180 thermo, 1/4 turnup on DB2-4911.
1997 Chevy Silverado Vortec
1993 GMC SLE 1500 350/4L60E
1968 427 Corvette, matching numbers
1969 Rally Sport Camaro

Last edited by daustin; 08-31-2007 at 09:18 PM.
Offline   Quick reply to this message
Sponsored Links
Advertisement
 
Sponsored Links
Advertisement
 
Closed Thread

Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
turn up mechanical pump? helfrich21 6.5L Diesel Engine 1 08-02-2010 11:14 AM
Truck won't turn over when I turn the key duramax973 Third Generation Duramax Electronics/Tuners 6 06-17-2010 06:23 AM
navigation voice turn by turn not working gotboost Electrical 0 11-30-2007 10:03 AM
Onstar Turn by Turn nav. Tigeman Electrical 3 05-23-2007 10:56 PM


All times are GMT -4. The time now is 09:43 PM.


Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide

SEO by vBSEO 3.6.0