Engine Specific Info and Questions > Non VW Group Diesel
Injection adjustments
lesharoturbo:
Ok, I was going to do some adjustments on my Renault engine and now I have more questions. It has a Bosch VE injection pump. The first is the aneroid pin. First, mine is made out of stainless and the sloped part is only about 15mm long. It is similar to the 1.6td aneroid in shape that is it is eccentric. Which way do I turn this? Does the most slope go towards the pulley end of the pump or the injector outlet side or where? I could not see where the boost pin was riding on the aneroid.
I was looking at my spare engine trying to get a feel of how the turbo was set up. There is a can about 30-35mm in diameter under the turbo mounted to the exhaust side. A rubber hose goes from this to a brass elbow on the intake side. I am guessing this is some sort of pressure regulator or blow off valve. Could I remove the hose and use an adjustable BOV? I will try to get some pictures for you guys to see.
I am hoping to increase my 75hp to around 100 -120. I would also like to futz with governer to increase my powerband.
Thanks you guys for the inspiration!
Bernie
firestorm13666:
The can that your talking of is most likly the vacume diafram for the wastgate on the turbo.For what i know of diesel there is really no need for a BOV as they are used to pervent damage to the turbo form the cloesing of the throttle at high engine speeds and boost,seen diesel have no throttlr body there is not need for one.If i am guy someone let me.I hope this helps
andy2:
The "feeler" pin that rides on the aneroid pin comes out of the housing from the gear end of the pump.You can also play with the spring tension on the aneroid.I usually back off the spring tension to a minimun,So that the pin can just be held up against its cover.This will make the the fuel come on sooner at lower boost levels.
You could play with the wasteagte on the turbo.To raise boost you could T in a brass fitting into the hose and put a valve on the T to bleed off a small amount of boost going to the wastegate.
If you are going to play with it though you may want to invest in an EGT and boost gauge.It may not take much of an increse in fueling to raies the EGT's out of the safe zone while pulling up a long Grade against the wind with your foot into it :twisted:.
Have a look at the exhaust on that thing too,see if you can make it more free flowing.I have put a 2.5" exhaust with muffler on one :wink:.
lesharoturbo:
Thanks Andy!
SO I should turn the aneroid pin toward the gear side of the pump. This is the side of the aneroid that has the most travel right?
The spring tension is adjusted with the starwheel right? I guess you turn it counterclockwise to reduce spring preload.
Could I just block off the hose to the wastegate completely?
Where do you find these EGT and boost gauges? My local parts store can't seem to source them.
Bernie
andy2:
I would turn the high side on the eccentric away from the pump gear end,That will give you the most fuel with boost.You can also change the pins up and down travel which will give more tuneability.You can file down the nylon spacer under the pin to get more down travel(basically make it half the thickness) and back the screw out of the cover to get more up travel(less fuel without boost).You'll see the mark where the feeler pin has been riding on the aneroid pin this will indicate its travel.
Clockwise on the starwheel will decrease spring preload.
I would'nt disconnect the wastegate completely as boost will climb close to 20 psi with a mild mod only! I'm not too sure how much boost the headgasket/bolts can handle safely.I've had one of those engines upto 18psi with wastegate disabled :twisted: ,To me that would be the max boost I would run(15-18psi).
Good quick reacting EGT gauges will cost more,I would recomend Isspro,Autometer and Stewart Warner to name a couple.Put the EGT probe into the exh manifold(pre turbo) that will give you the hottest and most accurate reading.EGT safe max would be 1300*-1350* (pre turbo).
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