could a turbo /6 be used for a tow rig???????
#749163
07/15/10 08:59 PM
07/15/10 08:59 PM
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Joined: Jan 2003
Posts: 1,448
right between milan dragway & ...
Flite_727
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,448
right between milan dragway & ...
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after following Shaker223's impressive performance with his stock longblock turbo dart, i got to thinking(daydreaming) any reason you couldn't use a turbo slant6 in a tow rig ,like a '70-'80's D-300/350 pulling a car trailer?? shakers old motor was obviously making as much if not much more torque than a well built 440. my concern is that the motor would see much longer periods of sustained boost while towing a load than a street/strip car that only sees boost for short bursts. could a 225 hold up?
whaddaya think? should i put this build on my bucket list?
'06 Magnum R/T Daily driver, 5.7 N.A.- [email]12.63@109[/email]
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Re: could a turbo /6 be used for a tow rig???????
[Re: ahy]
#749166
07/15/10 10:50 PM
07/15/10 10:50 PM
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Joined: Oct 2006
Posts: 365
Motor City
Shaker223
enthusiast
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enthusiast
Joined: Oct 2006
Posts: 365
Motor City
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Quote:
I don't know but it would take a lot of work to manage the heat. Really good valves - endurance racing or sodium cooled if still available. An oil cooler. A big aftercooler. Good forged pistons. A big radiator and a really good water pump. Manifolds would need to be cast iron or high end fabbed stainless.
It would be fun to try it.
I would agree with this.
"Gen 1" of my project used the factory manifold with no issues and a big summit radiator. Cooling was and is not an issue.
If it was a low boost application <10psi, I see no reason why it would not work with a stock engine as long as the AFRs were right. You could add a small 1-2gph jet to inject water/meth to keep any detonation to a minimum. You could have it switch on at say 7-8 psi.
Last year in May, I went to the chassis dyno. RWTQ was:
175ftlbs at 2900rpm with 4.93psi of boost
194 @ 3000 @ 6.11
209 @ 3100 @ 6.92
224 @ 3200 @ 9.63
239 @ 3300 @ 11.78
Max rwtq was 381ft/lbs (22 psi). That reading was low because the engine was fat and would not go over 4100 rpm due to the over rich condition.
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Re: could a turbo /6 be used for a tow rig???????
[Re: Shaker223]
#749167
07/16/10 11:22 AM
07/16/10 11:22 AM
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Joined: Jan 2003
Posts: 28,068
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,068
Irving, TX
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It looks like you'll need more boost at lower rpm to make a tow boat. That will limit high rpm power but tow rigs aren't meant to be 5000 rpm screamers.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: could a turbo /6 be used for a tow rig???????
[Re: Flite_727]
#749169
07/17/10 08:05 AM
07/17/10 08:05 AM
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Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan
I Live Here
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I Live Here
Joined: Jun 2008
Posts: 10,847
Oakdale CT
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Quote:
after following Shaker223's impressive performance with his stock longblock turbo dart, i got to thinking(daydreaming) any reason you couldn't use a turbo slant6 in a tow rig ,like a '70-'80's D-300/350 pulling a car trailer??
Very possible, I'll chime in as I have used a turbo *four cylinder* to do the job. The van use to see 6-8 pounds of boost for hours on end.
How long? How about from Mephis TN to New London CT in one 19 hour run!
Heat is an issue- a big radiator and a oil cooler is a must! There was only two other issues I ran into and that was exhaust manifold cracking from long periods of running under boost and head erosion around some small coolant ports.
I doubt that you would have a problem with a cast iron head but manifold cracking may be an ugly issue. The turbo 2.2/2.5 manifold is very good and rated for sustained 1650F operation, I doubt that the 225 manifold is rated for those operating temps. I did LOTS of towing with the van, it was a trooper. I racked up 50k on the van before selling it for something newer.
Oh and one last thought- While MPG was very good when not towing (22) while towing not so great (12-16) you still have to add fuel to all the boost pressure being fed to your motor. I had factory EFI, with a carb the numbers would go down AND you would have to watch the EGT's all the time to make sure nothing melts.
I suspect the slant six exhaust valves and manifold is rated for no more than 1450F (same if not less than the carb/tbi 2.2) modern stuff tends to run hotter so the fueling can be run leaner.
Short drag bursts on marginal parts are ok, they don't have time to melt, long lean runs on the highway even at low boost are just like dropping them in the forge. poof.
I suspect that you good get just as good towing mpg with a good smallblock (5.2 magnum with headers like my truck) as a turbo'd six.
Gary Donovan, turbo 4 lunatic.
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Re: could a turbo /6 be used for a tow rig???????
[Re: gdonovan]
#749170
07/20/10 03:54 PM
07/20/10 03:54 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
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Posts: 16,123
Grand Haven, MI
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I guess for sustained high boost apps, I'd be concerned about the slant 6 only having 3 main bearings instead of 7. I'd think a 4L jeep engine would be a better starting point if you wanted a gas turbo inline 6.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: could a turbo /6 be used for a tow rig???????
[Re: patrick]
#749171
07/20/10 05:49 PM
07/20/10 05:49 PM
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Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan
I Live Here
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I Live Here
Joined: Jun 2008
Posts: 10,847
Oakdale CT
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Quote:
I guess for sustained high boost apps, I'd be concerned about the slant 6 only having 3 main bearings instead of 7.
Please point to where this has been a problem.
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Re: could a turbo /6 be used for a tow rig???????
[Re: patrick]
#749173
07/20/10 08:46 PM
07/20/10 08:46 PM
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Joined: Jan 2003
Posts: 104,346
Garden Grove, CA
OzHemi
Penguin-hating Ginger
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Penguin-hating Ginger
Joined: Jan 2003
Posts: 104,346
Garden Grove, CA
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Quote:
I guess for sustained high boost apps, I'd be concerned about the slant 6 only having 3 main bearings instead of 7. I'd think a 4L jeep engine would be a better starting point if you wanted a gas turbo inline 6.
Or an Aussie hemi-6....265" and 7 main bearings. 1.96/1.6 valves standard too, plenty strong as well..  
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