Diesel vs pump gas and boost
I agree with the cummins statement but they typically run lower oil pressure anyways as opposed to cat or Detroit. We have some m11's that run around 15-20 and they're recon's. As opposed to the survival rate on a mixed fuel on diesels I don't agree with. Gas will detonate looooonnnng before tdc on a diesel just because of the 17:1 - 20:1 compression ratio. I realize that this example is not the same caliber of engine but we had a 6.5l Chevy diesel that had gas put in and it annihilated that engine. The bigger class diesels will survive but it ain't just an injector cup drying out lol.
FormerVendor
Joined: Feb 2011
Posts: 547
Likes: 1
If you looking for info on diesel motors look at Audi/VW.
Audi/VW has the most advanced diesel motors in the world.
Audi races in the prototype class and win's a lot of races with diesel power cars.
A buddy of mine has a VW TDI Golf, It gets stupid MPG and is very zippy.
It is super quiet to the point you would never guess it's a diesel.
Audi/VW has the most advanced diesel motors in the world.
Audi races in the prototype class and win's a lot of races with diesel power cars.
A buddy of mine has a VW TDI Golf, It gets stupid MPG and is very zippy.
It is super quiet to the point you would never guess it's a diesel.
Staging Lane
Joined: Sep 2010
Posts: 84
Likes: 0
Eh, my cummins ran mid 13's @105-6 w/ a 2.5 60' with about $1000 into it. 536whp thru a slipping auto. It made a name for itself around town, but I tore it apart a year or so ago and it just sits right now. Here a short clip running a cbr that needed a jetting a few years ago.
when I read it.They were such slugs they needed all the compression they could get, plus the turbo was about as big as a Grand National turbo on a freaking 6.5L motor!
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I work at caterpillar Engine center in lafayette, in. Come down and ill show you a real diesel engine. I work on the C175 line, and we make 16 and 20 cyl diesel engines. Head-per cylinder design. The crank weighs 2600lbs if that gives you an idea of how big these things are. they'll make about 2000hp, and north of 15000ftlb of torque and more. And these aren't even our biggest engines. these are off highway truck engines. Oh, and our standard is 4 turbos, and our high altitude setup on the 20cyl 797F cat truck is 6 turbos. 
The 6.2 and the 6.5 before the Duramaxx came out were both 22.5:1 compression. Learned that in GM ASEP school. Made my eyes go when I read it.
They were such slugs they needed all the compression they could get, plus the turbo was about as big as a Grand National turbo on a freaking 6.5L motor!
when I read it.They were such slugs they needed all the compression they could get, plus the turbo was about as big as a Grand National turbo on a freaking 6.5L motor!
Yep... I had one of those for a long time.
After I blew tow motors I put a 18:1 motor in the truck with a Holset and put 30 PSI to it.
Made power and moved for the first time in its life!
Got a D-max now at 45 PSI of boost, much happier
I work at caterpillar Engine center in lafayette, in. Come down and ill show you a real diesel engine. I work on the C175 line, and we make 16 and 20 cyl diesel engines. Head-per cylinder design. The crank weighs 2600lbs if that gives you an idea of how big these things are. they'll make about 2000hp, and north of 15000ftlb of torque and more. And these aren't even our biggest engines. these are off highway truck engines. Oh, and our standard is 4 turbos, and our high altitude setup on the 20cyl 797F cat truck is 6 turbos.
C175 is a bad motha.
Staging Lane
Joined: Nov 2007
Posts: 67
Likes: 0
Diesels are cool. Its a small undergound world of gearheads. totally different animal.
As far as multiple turbos, yes. Its called compounding. The primary is fed by the secondary. Primary is the small one, secondary is the large one.
Ive owned several diesels over the last 10 years, and only recently started modding them the last 2 years
Louis
I was just working on this pile of pipe with billet block Duramax a couple weekends ago.
By the way Louis Happy Thanks Giving. Hope to run see you at The Mile.
