Hey Benzer1

I have asked on the mercedes forum and they said ..... removal or disconnecting the alda is NOT a good idea..... it will seriously diminish the longevity of your diesel engine !!

It would be a shame to spend all the time and money to swap ONLY to shorten the life of your engine ; besides the ALDA won't gain only miniscule power gains !! HARDLY WORTH IT !!! ( IMHO )

 

[QUOTE=hulkgreen;446670]Hey Benzer1

I have asked on the mercedes forum and they said ..... removal or disconnecting the alda is NOT a good idea..... it will seriously diminish the longevity of your diesel engine !!

It would be a shame to spend all the time and money to swap ONLY to shorten the life of your engine ; besides the ALDA won't gain only miniscule power gains !! HARDLY WORTH IT !!! ( IMHO )[/QUOTE

The guys on one of the Benz forums told me the same thing. I still have the ALDA on the IP. I still have the switchover valve too, so it won't be too hard to hook it back up. I am going to bypass the EGR though, I did that on my SDL and it has more power and gets better mileage.
I still have to get the oil pressure and temp sending units working. The adapter for the oil pressure gauge should be here tomorrow. I installed the gas engine temp sender near the water outlet, but it's not working. I need to dig a little and see what's going on.
Thanks Hulkgreen,
John

 

removing the alda will get you more power, and no it will not diminish engine life. most of the people on the benz forums prefer that everything stays stock, because mercedes designed it to work like that and thats the best way. personally its just an iron head IDI 2valve inline diesel engine. they run forever, but you can make decent power with them. my alda is disconnected, i removed it right off the top of the pump. the rack limiter is a small arm with a threaded end and nut to limit the rack travel and fuel output.

heres the guide to adjustments etc

PeachParts Mercedes ShopForum - View Single Post - IP Full Load Adjustment 617 Turbo

 

I put the hood on tonight, no need for a scoop. I cut the inner support brace out where the valve cover sticks up and the hood closes!! The engine is still touching the hood skin, I am going to try to gently relieve it with a round pipe or something. Either way, you can hardly tell there is even a bump there. If I knew it would be this close, I would have lowered the engine a 1/4" or so. Oh well, I really don't want to fool with it now. I reconnected the ALDA, I am not really concerned with power anyway. I thought the ALDA enriched the fuel based on boost, would that not give you more power than without it?

John

 

without the alda it just enriches without waiting for boost from the leaner running.

 

Good stuff!! I was doing some measuring on my buddys cherokee yesterday and it looked like the hood would close (barely) just missing that brace if I welded flat motor mount plates on the bottom of the frame rails. Still kind of guessing the fore/aft position with bell adapter. Looks like that also keeps the crank at the same altitude as the 4.0. His jeep has a lift so most steering issues clear. By the way.is there a coolant drain plug for the block? Its getting abnormally COLD here (usually the dogs water never freezes here) I dont want to risk freezing my new project. I drained as far as I could with hoses but there has got to be more in there. One more,I cut the exhaust out are those cataletic converters half way back?? Can`t wait to hear about your first road trip!!

 

i would just fill the engine up with 100% antifreeze, it wont freeze that way

 

No kidding!! still want to know if there is a drain,you know to flush the old crap out before contaminating the new!

 

Excactly! Don't disconnect the ALDA- thats your fuel enrichment! It's proofed million times as a good and reliable device.

Don't use 100% antifreeze.

50% has better antifreeze capabilities than 100%!!!

 

If the Jeep you are swapping the 617 in had the 4.0, make sure to check where the oil sump will sit in relation to the trans bellhousing. My Wagoneer had the 2.8 V6, so the trans sits farther forward in the engine bay than the Jeeps with the 4.0. If my engine was any more rearward, the sump would hit the panhard bar and front diff. If the Jeep is lifted, that will help. Just make sure you compensate for suspension travel too. If something hits that cast aluminum pan on the 617, it's over.

John