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#1
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D24t Land Rover/glow plug/injector questions.
My name is Josh, I am new here but not to Volovs or diesels. I own Yoshifab which makes a bunch of aftermarket parts for red block volvos. My daily driver is a 245 with a 1.9TDI swap that I have been daily driving since 06.
My latest project is a D24T powered 97 Land Rover discovery. The motor is out of an 86 745 with 101k original miles. I got to see the motor start and run at the dismantler it came from and seemed to be in generally good repair. I have had the truck up and running for almost a week now. Still sorting through all the misc wiring getting all the lights to work, glow plugs to behave, and keep the alt charging. The list is getting shorter and I am starting to come up with some questions. 1. It seems that the glow plugs stay on for about 30 seconds under any conditions. From what I understand they are supposed to shut off once the engine is running. How does the glow plug relay know the engine is running? 2. I was seeing only about 8psi of boost. I decided to remove the egr and over boost valve and run 12v to the alt compensator and it went up to about 10. Still seems rather laggy, anything else I should check? 3. My number one injector is blowing fuel bubbles out of the base. Is this a common problem? I assume its just a seal but never really seen anything like that before. Trying to get this thing running as best I can before I do stage zero and turn the fuel up. Seems to run nice and while it is on a heavy ass 4wd truck it does seem like it runs out of steam pretty quick. I can manage 60mph on flat ground but its work. Throttle seems to do nothing past 50%. I have new conti belts and all the tools to set timing. I am looking for some new nozzles and shims to service the injectors. Bosch nozzles seem to be crazy cheap but I read here that monarks are the way to go. Only issue is I cannot find anyone that sells them. I have emailed the contact posted here and got no love. Any suggestions? |
#2
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Hello and welcome!
1. The gp relay is temp sensitive, it has it's own temp sender on the engine, same as the sender for the dash gauge. Sounds like its disconnected so it thinks it's freezing cold. It can't tell whether the engine is running or not. 2. The stock turbo has a tiny exhaust housing and it should spool quickly.. Check the obvious stuff like exhaust gaskets leaking. Retarded timing could be contributing to the issue. Get everything set correctly then turn up the pump, more fuel will spool it more quickly. When you time it take the time to check that the cam is timed to the crank correctly at TDC. I have worked on one with the cam and crank a few degrees out and it was a total turd. 3. Not sure if you mean leaking at the base where it meets the head, or the base of the injector body leaking where it is threaded together. At the head there is a heat shield which is also the "seal" to the head, though it's metal. They are one time use and crush when you torque the injector down. If the body of the injector is leaking it will need to be disassembled, the halves lapped and reassembled. Not sure who has the monarch nozzles, I'm running the gtd nozzles and haven't had an issue. Good luck with it and please post up some pics! Always interested to see a d24 swap, not many on here... Jason
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Back again with a '84 760 GLE D24T/ZF SOLD but not forgotten! 1984 760 Sedan, built D24Tic/ T-5 swapped My engine build: http://www.d24t.com/showthread.php?t...t=engine+build T-5 swap: http://d24t.com/showthread.php?399-W...to-quot-w-pics! |
#3
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GP controller on my car gets its temp signal from a second temp sensor, located at the back of the head, between the rear cam sprocket and IP sprocket. When disconnected it will give full glow time each time ignition is switched to on position.
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1985 744 gle d24t 1985 745 gle d24t |
#4
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Turbo spins fine, does not make any funny sounds. "space ship" had a rip in the line going to it but replacing that made no difference. I am about to go play with the fuel stuff right now. Will report back with results.
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#5
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Without the boost signal, it would cut you to near NA power...I did have one that was sticky a for a few hours, then freed up.
Best of luck to ya. |
#6
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So i plumed a gallon can of diesel in and wedged it in the engine bay. Power was SLIGHTLY better but still nothing to write home about. I pulled the return line and took a fuel sample. The fuel dribbled out and seemed to have a lot of air in it. I put some in a clear cup and it seemed pretty dark. The diesel out of the jug looks like cooers light and the stuff out the return line looks like sierra navada. I am now thinking the pump may have sat for awhile and is a bit gummed up. Any advice/thoughts?
Edit: let it run for awhile, coming out clean now. Still laggy though. Edit: Pulls past 60 now... slowly but it would probablly hit 70 if you kept your foot in it long enough. Disabled the cold start deal and it seems to spool a little better. I am thinking its time for belts and setting the timing now. Thanks for all the help. |
#7
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Quote:
Do you have a tach working? You should see wastegate limited boost by 3000 RPM, and overboost valve open at 11PSI(you clearly feel the car fall flat on its face) ,3100RPM if you block the signal line. Spool about 500 earlier with an MBC helps alot with the M46. I guess there are some things to look at. Welcome to the board, I'm new here too. I'll PM you my number, I can talk a lot faster than I type. |
#8
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I am guessing the cold start device isn't working. So does it fail in the advanced or retarded position?
I am getting mechanical full throttle but I don't think im getting the fuel I am asking for, the pump does nothing after half throttle. I get no smoke, see no boost at all until about 3k, boost goes for 5 to 10 psi by 5k. No real noticeable power along with that boost (5000lb truck so im not sure what to expect). I am thinking I may need a lift pump since the tank is now a couple feet lower than it would be in the volvo. What are "gtd" nozzles? The injector is leaking at the base, I will replace the gasket when i do the injector rebuild. I need a source for a valve cover gasket, nozzles, shims, and lower injector seals. |
#9
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Quote:
Other thoughts, does the turbo spin OK, and is the spacship on top of the pump getting signal from the intake manifold? |
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