DieselTalk

DieselEngineTrader's FREE Diesel Engine Forums

new topic search Categories login View Cummins Engines

CATEGORY LISTINGS > CUMMINS > cummins903 [ REFRESH ]
Thread Title:

cummins903


Created On Monday April 04, 2011 06:51 Diesel Talk
Diesel Talk Forum

gatordoc903
Diesel Talk Forum
Posts: 20
Joined: Oct 2010

Note Monday April 04, 2011 06:51 View thread in raw text format
Diesel Talk
I'm looking to up the HP on a 903 in a old KW I think the cpl is 340 350hp? How hard would it be to change it to a higher hp military or marine Thanks

Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

JoeZ
Diesel Talk Forum
Posts: 938
Joined: Dec 2008

Note Monday April 04, 2011 10:07 View thread in raw text format
Diesel Talk
Is it a V-903 or a VT-903?

-------------------------
One of the last 2 Stroke mechanics left.
44 years in the business and worked on everything from 53 series to 149 series. Winding it down now...time to move on.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

gatordoc903
Diesel Talk Forum
Posts: 20
Joined: Oct 2010

Note Monday April 04, 2011 10:56 View thread in raw text format
Diesel Talk
It's a VT-903
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

JoeZ
Diesel Talk Forum
Posts: 938
Joined: Dec 2008

Note Monday April 04, 2011 12:15 View thread in raw text format
Diesel Talk
You can go up to somewhere around 475hp on the VT-903 with a little modfication. Stock horsepower ranged from 340 to 400 if my memeory is correct. I hope you aren't planning to make a daily runner out of it. The parts are almost impossible to get anymore. I needed an exhaust manifold for one several years ago and Cummins said the last one in existance had been about 5 years before. It was never a real powerful dependable engine. I think Cummins would like to forget they ever made it.

-------------------------
One of the last 2 Stroke mechanics left.
44 years in the business and worked on everything from 53 series to 149 series. Winding it down now...time to move on.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

gatordoc903
Diesel Talk Forum
Posts: 20
Joined: Oct 2010

Note Tuesday April 05, 2011 04:51 View thread in raw text format
Diesel Talk
I might be sick but I have always liked the V8 engines ran a lot of the 903 and 504 in ferterizer spreaders over the years What would I have to do to get this up to 475hp? the truck is going to be a spare and show truck. As for parts I know they are high but over the years I've got a good stash of spare parts and always keep my eye out for more. Thanks again
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

westcoast
Diesel Talk Forum
Posts: 981
Joined: Dec 2008

Note Tuesday April 05, 2011 05:06 View users profile View thread in raw text format
Diesel Talk
With your camshaft and rocker ratio 1:1 - injector change , turbo and adv injection timing will give you 400 hp + on the old style pistons without much smoke Regards David

-------------------------
detroit
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

westcoast
Diesel Talk Forum
Posts: 981
Joined: Dec 2008

Note Tuesday April 05, 2011 05:15 View users profile View thread in raw text format
Diesel Talk
Or if you don,t want to change parts - change button in pump and up your fuel pressure ( That,s if you don,t mind power and smoke ) Regards David

-------------------------
detroit
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
Diesel Talk Forum

JoeZ
Diesel Talk Forum
Posts: 938
Joined: Dec 2008

Note Tuesday April 05, 2011 05:45 View thread in raw text format
Diesel Talk
I can't remember all what is needed for the 475hp (too many years ago, like back in the 70's), but I believe depending on what pistons you have, they may need to be changed. The pump had to be juiced up, the injectors had to be recalibrated with different nozzles, marine cam with an offset key maybe, and I do believe we got away using a stock 855 Cummins T-50 turbo. The few we did produced 470-480hp on an engine dyno.

-------------------------
One of the last 2 Stroke mechanics left.
44 years in the business and worked on everything from 53 series to 149 series. Winding it down now...time to move on.
Diesel Talk Forum
Reply Diesel Talk Forum Quote Diesel Talk Top Diesel Talk Forum Bottom Diesel Talk
Diesel Talk Forum
CATEGORY LISTINGS > CUMMINS [ REFRESH ]
Young & Sons Inc.
IESC CORP.
Luoyang Diron Parts Trading Co.,Ltd
Diesel Sales
Advertize on Diesel Engine Trader

Customer Testimonials

Newsletter

Subscribe to our mailing list to get all the latest DET news.as well as daily or weekly notifications of new engines and spare parts listings.

'DieselEngineTrader.com is a very good resource. I use it to search for engines I need and have also advertised a Volvo Penta engine and received some genuine enquiries. Our local market is small and DieselEngineTrader.com helps me to reach a worldwide market.'

Dimitris Constantinou, Limassol, Cyprus

'I was amazed to find the engine I needed in minutes! Even more amazingly, it was less than half the estimated repair cost of the original unit!'

Paul Crane, Crane Engineering, UK

'Listed a few engines to see the response and we're getting calls every other day!'

Richard Bemsee, Live Oak Diesel, Florida, USA