injector pump timing

[heym]

First post and I have a question, I need some more fuel after installing a boost controller on my 85 300d..how do i go about doing this..i did a search but came up empty handed. Is there any write ups on this procedure and approx. how much do i need to bump the timing to get some more power. thanks..great forum

[Brian Carlton]

Originally Posted by heym

First post and I have a question, I need some more fuel after installing a boost controller on my 85 300d..how do i go about doing this..i did a search but came up empty handed. Is there any write ups on this procedure and approx. how much do i need to bump the timing to get some more power. thanks..great forum

Welcome to the forum.

Why do you believe you need more fuel? You really can't handle more fuel without an intercooler and run the risk of melting a piston if you do so.

To get more fuel requires some critical adjustments of the injection pump................and usually requires removal of the pump for access. One mistake in the adjustment and you'll cook the engine.............or you won't get it back to idle.

Bumping the timing won't result in any measurable power increase. The real question is whether the timing is currently correct.

[heym]

so an intercooler would be the next step, then modification of the injector pump. I understand this is very expensive. I just thought this was the next step in the modification process but i was mistaken..thanks for the reply.

[compress ignite]

The first step will be to learn a lot more!
'Attempt no "Modifications" without installing a Exhaust Gas Temperature probe
and gauge [and running baseline collections of temperature(s) at varying RPMs
for data comparison]
'Else you'll surely "Cook Off" your diesel and be none the wiser.

[Skippy]

Very true. You need to keep the EGTs no higher than about 1200 deg F (pre-turbo) or 1050 post-turbo for sustained operation. Higher than that and you run the risk of melting the turbine on the turbo or an exhaust valve. Short spikes of higher temperatures are ok.

[MTUpower]

If you are looking for more power then there is a confirmed list of things to do: change all fluids and filters. adjust valves. adjust alda. clean banjo bolt. check/adjust linkage. do a diesel purge. If the car is too slow after this then consider a different car. If you choose to keep the MB diesel, then buy and install a EGT gauge. Buy and install a boost gauge. Then you can adjust the boost and internal IP settings. None of this happens overnight.

[Cervan]

Originally Posted by MTUpower

If you are looking for more power then there is a confirmed list of things to do: change all fluids and filters. adjust valves. adjust alda. clean banjo bolt. check/adjust linkage. do a diesel purge. If the car is too slow after this then consider a different car. If you choose to keep the MB diesel, then buy and install a EGT gauge. Buy and install a boost gauge. Then you can adjust the boost and internal IP settings. None of this happens overnight.

hes looking for the max load setting, it can be accessed with the pump on the car, but i wouldnt suggest touching the engine without an EGT probe.

[heym]

thanks for all the advice..first will be the egt probe..but what is the max load setting you guys are talking about, is there a procedure and what exactly does this do. thanks guys..already learning alot

[MTUpower]

Originally Posted by Cervan;

hes looking for the max load setting, it can be accessed with the pump on the car, but i wouldnt suggest touching the engine without an EGT probe.

uh..."buy and install a EGT gauge...then you can adjust the boost and internal IP settings." He's obviously a just starting out trying to modify the engine- it's our job, if we choose to assist him, to make sure our advice will most likely not allow him to destroy his engine. First...do no harm.