Another new guy with questions...

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Re: Another new guy with questions...

Postby laneends » Wed May 24, 2017 11:45 pm

I really appreciate your input so far! No plans for twins at this point. Which housing do you suggest on the hot side? I was thinking the .70... cold side outlet? Stay with the hose style? Valve springs: any reason to go with anything stronger than 60#, or will that just eat my cam?
1990 D-250 with getrag 360: pyro, boost, volt, oil pressure, fuel pressure, and water temp gauges, hot screw, 366 gov spring, THD pin, M&H dynamic timing spacer, throttle linkage adjusted for full travel, 4" turbo back exhaust, THD's LPPLP, BHAF, south bend clutch. THD 5x13 comps, 362sxe, 3" crossover, pump to the head
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Re: Another new guy with questions...

Postby Remps » Thu May 25, 2017 11:58 am

I'd do the .7 housing, as for which style outlet, not sure, it may depend on what style inlet on your intercooler..I'd ask Eric about that. 60# springs are plenty good for a single turbo, stock pushrod 12mm ve. I've seen 35-40 psi at 3600 rpm, but I was kinda crossing my fingers for the valves at the same time. :) Also saw over 4k rpm once by accident in a lower gear, didn't hurt anything thankfully. About your intercooler, your radiator will perform better if it doesn't have another radiator in front of it feeding it hot air, the non-intercooled rads are barely adequate sometimes as it is.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.
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Re: Another new guy with questions...

Postby laneends » Thu May 25, 2017 12:23 pm

Intercooler is hose style, I guess I was overthinking that one... so I take it I should keep the rpm's in the lower 3's until I get some springs? Studs and springs look like they're going to set me back another grand... this is an expensive addiction!

As for the intercooler, I agree another radiator in front is not going to help cooling, but I don't see the difference between that and an air to air. I don't know if it would make much difference but if she ever gets hot I could shut the pump off... heck, until a month ago I didn't even have a radiator fan, haven't for years. It would only get hot in traffic jams, or towing over the pass. Couldn't find a "proper" fan, I ended up getting one from Summit. And I have a Napa clutch that I hate, may as well have bolted it direct by the sound of it!
1990 D-250 with getrag 360: pyro, boost, volt, oil pressure, fuel pressure, and water temp gauges, hot screw, 366 gov spring, THD pin, M&H dynamic timing spacer, throttle linkage adjusted for full travel, 4" turbo back exhaust, THD's LPPLP, BHAF, south bend clutch. THD 5x13 comps, 362sxe, 3" crossover, pump to the head
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Re: Another new guy with questions...

Postby laneends » Thu May 25, 2017 12:28 pm

Hmm, thinking about cooling I suppose I could plumb in a crossover so I could use it for additional engine cooling in an emergency. Got to be better than turning on the heater. Can't wait to get off this ship and go play trucks!
1990 D-250 with getrag 360: pyro, boost, volt, oil pressure, fuel pressure, and water temp gauges, hot screw, 366 gov spring, THD pin, M&H dynamic timing spacer, throttle linkage adjusted for full travel, 4" turbo back exhaust, THD's LPPLP, BHAF, south bend clutch. THD 5x13 comps, 362sxe, 3" crossover, pump to the head
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fuel screw!!!!
 
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Re: Another new guy with questions...

Postby Remps » Thu May 25, 2017 5:14 pm

You could get away with re-torqued stock head bolts @ 125 ft/lbs if you're going to stay under 400 hp and not get crazy with the timing (I'd stay under a 1/4" bump with your spacer)and your gasket is holding up good and the head/block is flat. Of almost equal importance is proper warm up before going wot. Or you could look into mighty diesel head bolts. Some people "make" their own studs.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.
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Re: Another new guy with questions...

Postby laneends » Thu May 25, 2017 9:27 pm

I always warm her up good before driving at all, and take it easy until she's fully warm. When retorqueing, do you remove the bolts and clean and oil them one at a time, or just put a wrench on them? Can you do valve springs with the head on? I have not done anything with the timing besides the spacer, I like low end grunt maybe I should give it a nudge to see how I like it.
1990 D-250 with getrag 360: pyro, boost, volt, oil pressure, fuel pressure, and water temp gauges, hot screw, 366 gov spring, THD pin, M&H dynamic timing spacer, throttle linkage adjusted for full travel, 4" turbo back exhaust, THD's LPPLP, BHAF, south bend clutch. THD 5x13 comps, 362sxe, 3" crossover, pump to the head
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Re: Another new guy with questions...

Postby Remps » Thu May 25, 2017 11:17 pm

Basically yes, it's a good idea to clean out the bolt holes a bit to make sure you have a little space below the bottom of the bolt to avoid false torque readings. Long screwdriver, brake cleen, paper towel and/or shopvac whatever you want to rig up. Lightly oil and re-install, torque it down if it spun in all the way smoothly. As long as you don't use so much oil that it has nowhere to go when the bolt is bottomed and ready to tighten you're good to go. I've done this on 5 trucks now and haven't seen a bad head bolt yet. No head removal required for valve springs, I think you just need a valve spring compressor tool.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.
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Re: Another new guy with questions...

Postby laneends » Fri May 26, 2017 12:16 am

Thank you again for your input! Seems like this forum is pretty dead these days. Has been great for reference, I don't even know how many hours I've spent reading. Can be difficult sometimes to separate opinion and fact. Should make port this afternoon, excited to open all my packages and start turning wrench.
1990 D-250 with getrag 360: pyro, boost, volt, oil pressure, fuel pressure, and water temp gauges, hot screw, 366 gov spring, THD pin, M&H dynamic timing spacer, throttle linkage adjusted for full travel, 4" turbo back exhaust, THD's LPPLP, BHAF, south bend clutch. THD 5x13 comps, 362sxe, 3" crossover, pump to the head
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laneends
fuel screw!!!!
 
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Re: Another new guy with questions...

Postby Remps » Fri May 26, 2017 10:00 pm

Usually pretty slow on here when folks are getting their crops in the ground, and around harvest time.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.
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Remps
14mm rotor
 
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Re: Another new guy with questions...

Postby spencerdiesel » Tue May 30, 2017 3:45 am

Laneends it's refreshing to see your enthusiasm. One day I'd like to end up with 6x12 or 13's and a 62 sxe from Eric.

I've only heard great things about that turbo. Fatty's 6x13 injectored truck gets on out WELL
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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Re: Another new guy with questions...

Postby oldestof11 » Tue May 30, 2017 6:19 pm

laneends wrote:I really appreciate your input so far! No plans for twins at this point. Which housing do you suggest on the hot side? I was thinking the .70... cold side outlet? Stay with the hose style? Valve springs: any reason to go with anything stronger than 60#, or will that just eat my cam?


Seen with my own eyes.

Brand new Cummins 60's at 1/2 lift had same poundage as stockers. Seat pressure was more but it still had the same numbers after so much lift. So yes, go 165's. With a ZDDP additive, it should help from wiping a cam lobe.

2nd, I hit over 4000rpm with a stock gov spring and 370's on a dyno.

OD OFF/Direct gear, 3.55 gears, 31" tire, 115mph on the dyno.
OD ON, same specs, 130mph.
Jon
93 D250~ Mismatch of cheap parts, trying to look fast going slow
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Re: Another new guy with questions...

Postby laneends » Sat Jun 03, 2017 8:45 pm

Quick update for anyone following... My south bend clutch is installed with a new rear main. The leak is gone! BHAF installed. Fuel pressure gauge is mounted but I haven't wired it up yet, and my gasket kit is here so I can get my 366 Spring in soon. Had to put on a new belt and tensioner. Truck is running great
1990 D-250 with getrag 360: pyro, boost, volt, oil pressure, fuel pressure, and water temp gauges, hot screw, 366 gov spring, THD pin, M&H dynamic timing spacer, throttle linkage adjusted for full travel, 4" turbo back exhaust, THD's LPPLP, BHAF, south bend clutch. THD 5x13 comps, 362sxe, 3" crossover, pump to the head
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fuel screw!!!!
 
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Re: Another new guy with questions...

Postby klofdahl » Sat Jan 20, 2018 12:26 pm

I have a similar set up that your looking to go minus injectors (5x13 THD comps In the mail as we speak) The SXE 62 is an awesome upgrade if you can swing it especially with the 366 spring and pump tweaking. I'm running 37's and 4:10 gears and have to try pretty hard to hit 1300* that's with a second gen intercooler.

forum/94-98-performance-parts-discussion/674825-lets-talk-valve-springs.html
The above link is some good info from Zach at Hamilton cams on valve springs. From what I gather he really knows his stuff. I'm currently rebuilding my motor with a new cam and 60# springs but I would go with 165# beehives if the funds were available but unfortunately I'm taped so 60#s for now.

It's important to know the efficiency/limitations in your turbo and valve train and WHY.
74 International Travelette, 89 Cummins intercooled, bored .020 over. Hamilton 182, 60# springs, SXE 62, M&H#4 fuel pin and spacer, THD Bosh 5x13 injectors, ARP head studs, 366 spring, THD LP, Twerked VE, BHAF, 4" turbo back, nv4500, SB 500/1000 clutch, 29 spline np205, 37's, 4:10's.
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