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+--- Thread: Cheap OM617 performance (/showthread.php?tid=2127)
Cheap OM617 performance - Robert_UAH - 01-07-2011
Ok so I am going to be building a car for the Grassroots Motorsports $2011 Challenge. Basically it is a competition in which you have to build a car for under the $2011 budget cap and do a autocross, drag race and concours competition. So the car I am going to be getting has had a OM617 from a '83 300TD swapped in. It isn't a Mercedes car. It was a car that was started for the challenge a few years ago but wasn't finished and pasted on to someone else now I will be getting it. I will have $550 in the car right off the bat and I need to fabricate a driveshaft, finish some wiring and obviously upgrade the suspension. So I was wondering with the left-over money, what are the most cost effective modifications? From what I have been reading the IP is a big limiter in this engine and cost $$$$ to get a better one, am I off here? It seems from what I have read the W115 intake manifold is the one to get. These cars are a T3 pattern correct?
I should have said it is a OM617a
RE: Cheap OM617 performance - led-panzer - 01-07-2011
Yea its a t3. If you want cheap, look into cutting the collars on the delivery valves and hogging out the injectors, but doing that you will need a good intercooler.
RE: Cheap OM617 performance - Robert_UAH - 01-07-2011
I was thinking of putting a Holset off a Cummins on it and a junkyard intercooler.
RE: Cheap OM617 performance - George3soccer - 01-07-2011
Good choice on the turbo but not for that motor and the limited fuel. Your better off with a k26 kkk turbo or something larger possibly a t04 with an intercooler.
RE: Cheap OM617 performance - Robert_UAH - 01-07-2011
I thought the KKK K26 turbo had a different flange then the T3. As far as I know the T04 is much more difficult to find in the junkyard then the Holset which is why I was leaning towards that. But if it can't take the turbo, I will look for something else. Most of my experience with automobiles has been Civics, MGs, Yamaha 2-strokes and Suzuki 600s so take that for what it is.
(01-07-2011, 12:36 PM)led-panzer Yea its a t3. If you want cheap, look into cutting the collars on the delivery valves and hogging out the injectors, but doing that you will need a good intercooler.
What does cutting the collars on the delivery valve do?
RE: Cheap OM617 performance - jonbobshinigin - 01-07-2011
Your problem will be fuel, not air flow to start with. For the turbo were you thinking HY35 or HX35? If so, it is too big, especially without enough fuel. There should be a writeup somewhere one a "full load adjustment" on your IP/Injection Pump. That will probably be the best place to start.
RE: Cheap OM617 performance - Robert_UAH - 01-07-2011
HX35.
(01-07-2011, 03:11 PM)jonbobshinigin Your problem will be fuel, not air flow to start with. For the turbo were you thinking HY35 or HX35? If so, it is too big, especially without enough fuel. There should be a writeup somewhere one a "full load adjustment" on your IP/Injection Pump. That will probably be the best place to start.
Is this the writeup you are taking about?
http://www.superturbodiesel.com/std/ip-full-load-adjustment-procedure-for-mw-pumps-t-189.html
RE: Cheap OM617 performance - Geezer - 01-07-2011
what's the 617 in?
RE: Cheap OM617 performance - Captain America - 01-07-2011
(01-07-2011, 03:41 PM)Robert_UAH HX35.
(01-07-2011, 03:11 PM)jonbobshinigin Your problem will be fuel, not air flow to start with. For the turbo were you thinking HY35 or HX35? If so, it is too big, especially without enough fuel. There should be a writeup somewhere one a "full load adjustment" on your IP/Injection Pump. That will probably be the best place to start.
Is this the writeup you are taking about?
http://www.superturbodiesel.com/std/ip-full-load-adjustment-procedure-for-mw-pumps-t-189.html
Yup thats the one!
Also do any maintenance that has been forgotten about.. Valve job, cam timing, IP timing, fuel filters.. all that will help the engine run its best, they will all make a difference. Boost should be around 12-14. If you can rebuild the injectors, do that as well. You could just put a larger comp wheel in the stock turbo instead of buying something else. I put a 60 trim in mine (the stock wheel is a 45 trim Garrett T3).
RE: Cheap OM617 performance - ForcedInduction - 01-07-2011
$2011-$550=$1,461
Barely enough to buy a high output injection pump. If you spend the money on anything else you'll never see more than 160hp, no matter what turbo you use.
RE: Cheap OM617 performance - Robert_UAH - 01-07-2011
(01-07-2011, 06:28 PM)ForcedInduction $2011-$550=$1,461
Barely enough to buy a high output injection pump. If you spend the money on anything else you'll never see more than 160hp, no matter what turbo you use.
But $2011-$550-used race slicks-suspension upgrades-driveshaft-radiator will not be enough to buy a high output injection pump. Considering the original was rated at just over 100hp at the crank. Around 140-150hp would be nice for the time being.
RE: Cheap OM617 performance - ForcedInduction - 01-07-2011
If you're going to use the stock injection pump then there isn't much point in increasing turbo airflow. The stock turbo can more than handle everything the stock injection pump can put out. If anything, you should go to a smaller turbo for better response.
RE: Cheap OM617 performance - Robert_UAH - 01-07-2011
So what can I do other then maintenance? Turn up the boost and bigger exhaust? After the Challenge the car will be getting a high output pump and a lot of other goodies in preparation for Targa Newfoundland.
RE: Cheap OM617 performance - Robert_UAH - 01-08-2011
(01-07-2011, 05:09 PM)Geezer what's the 617 in?
Mazda Miata
RE: Cheap OM617 performance - Silberpfeil - 01-17-2011
(01-07-2011, 07:14 PM)Robert_UAH So what can I do other then maintenance? Turn up the boost and bigger exhaust? After the Challenge the car will be getting a high output pump and a lot of other goodies in preparation for Targa Newfoundland.
How serious are you about the Targa?
Are the rules still extensively cantered towards the vintage classes?
One of my fav Targa Newfoundland cars was an Escort RS 2000 with a modern 2.3 L Ford turbo 4 making over 400 hp
RE: Cheap OM617 performance - Robert_UAH - 01-18-2011
I want to do it. It will be a Challenge car first and then it will all come apart to put a '99-'05 Miata front subframe and a lot of extra stiffening (like the Flyin' Miata butterfly brace) and AFCO dampers and extra horsepower. I am not sure how competitive I can be but I want to take a shot.
RE: Cheap OM617 performance - dalek - 08-08-2011
Resurrecting thread, but wouldn't that make the Miata rather nose-heavy?
RE: Cheap OM617 performance - 98taco3 - 08-08-2011
(08-08-2011, 07:54 AM)dalek Resurrecting thread, but wouldn't that make the Miata rather nose-heavy?
Seems to me it would be offensively heavy in the front end and under steer like crazy. Even with redesigning the suspension. You would be talking quite a bit of modification that just swapping in another years stock stuff would not accomplish.
RE: Cheap OM617 performance - dalek - 08-08-2011
Mid engine?