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+--- Thread: '78 300D turbo results (/showthread.php?tid=70)
'78 300D turbo results - kamel - 08-16-2008
Well, I finally gave in and picked up a turbo and manifolds from the junkyard. I just need a little help converting my NA into a turbo setup. I plan on just overfueling across the board, as the NA injection pump does not have boost compensation and I remeber someone else doing this with good luck, unless someone can guide me on how to do it otherwise. Also, I need a way to get oil to the turbo. Would I be able to run one oil line to the oil cooler lines for supply?
Any help is appreciated. And I will install a pyrometer shortly.
Re: Have turbo, now I need help installing it - winmutt - 08-16-2008
kamel Well, I finally gave in and picked up a turbo and manifolds from the junkyard. I just need a little help converting my NA into a turbo setup. I plan on just overfueling across the board, as the NA injection pump does not have boost compensation and I remeber someone else doing this with good luck, unless someone can guide me on how to do it otherwise. Also, I need a way to get oil to the turbo. Would I be able to run one oil line to the oil cooler lines for supply?You can install use the same oil plumbing from the turbo engine and use the back of the oil filter housing. Why not just install a turbo engine? You know they are not the same internally correct?
Any help is appreciated. And I will install a pyrometer shortly.
Re: Have turbo, now I need help installing it - kamel - 08-17-2008
Thanks for the response!
Yes, I fully understand this and turbo motor may be an option eventually. I will only be running 5 psi at most so it should make a noticeable difference. Speaking of which, how do I set the wastegate so I don't kill it prematurely?
Re: Have turbo, now I need help installing it - winmutt - 08-17-2008
kamel Thanks for the response!Google "adjusting wastegate garrett".
Yes, I fully understand this and turbo motor may be an option eventually. I will only be running 5 psi at most so it should make a noticeable difference. Speaking of which, how do I set the wastegate so I don't kill it prematurely?
Re: Have turbo, now I need help installing it - bgkast - 09-28-2008
You will probably need to find a custom spring, or new wastegate to run that low of boost.
Re: Have turbo, now I need help installing it - kamel - 09-29-2008
Thanks. I decided to go ahead with the turbo install, tapped into the oil pressure gauge line for the feed and the return is in the pan. I might wind up using another turbo I have on hand, also a T3, but this ones from a volvo and has an external wastegate.
Earlier this evening, since I have the oil filter housing off, I started the rack limiter removal procedure, and got quite frustrated. How is the ADA removed from the plate? I tried unscrewing the plate and ADA as one unit, but it seemed to just spin around. I know it doesn't have to be taken off, but as it is, it's much harder to even see what I'm doing than I ever expected.
Also, I had the pump all set to give birth the the limiter, but it dropped down, but is still in the upper portion of the IP. At this point, would it just be easier to remove the pump and dig out the limiter? Do the individual lines have to be bled if removed? Once the limiter is removed, do the 19mm and 13mm bolts go back in?
Sorry for the questions, but these diesels are far more complex than any gasser I've worked on.
Re: Have turbo, now I need help installing it - winmutt - 09-29-2008
A magnet pen is your friend. The bolts do not go back.
Re: '78 300D turbo install - kamel - 09-30-2008
Somehow managed to get the limiter out. The pen magnet size is very important, the one I was using was about 3/8" wide and I couldn't get it down in their to retrieve it. So, I borrowed a snap-on 1/4" and after wiggling the limiter around, I can out with relative ease.
I decided to turn this thread into a documentation of installing my turbo, now that I've got it mostly figured out.
Re: '78 300D turbo results - kamel - 10-07-2008
So I finally got a chance to drive her with the turbo installed and fully functioning.
My initial thoughts, turbo lag sucks, but the boost and the turbo spool sound alone is worth it.
Off boost, it seems slower than before, but once it gets going, a definate increase is noticed. It took a good couple seconds off my 0-60 times and is much smoother in the higher RPM range than the NA setup. Doesn't smoke too bad, just off the line and at shiftpoints.
So far, I think the greatest benefit by far is the exhaust note, especially with the temporary 3" downpipe I'm running now.
Re: '78 300D turbo results - winmutt - 10-07-2008
kamel So I finally got a chance to drive her with the turbo installed and fully functioning.What is the avg 0-60 now?
My initial thoughts, turbo lag sucks, but the boost and the turbo spool sound alone is worth it.
Off boost, it seems slower than before, but once it gets going, a definate increase is noticed. It took a good couple seconds off my 0-60 times and is much smoother in the higher RPM range than the NA setup. Doesn't smoke too bad, just off the line and at shiftpoints.
So far, I think the greatest benefit by far is the exhaust note, especially with the temporary 3" downpipe I'm running now.
Re: '78 300D turbo results - kamel - 10-09-2008
Well, prior to the turbo, I was averaging 15 sec on the 0-60. Now, it's doing it in about 12.
Re: '78 300D turbo results - kamel - 10-23-2008
Swapped out the turbo for a A/R TB03 from a volvo 740I. Spools up much faster and the car's a lot happier at 8psi. The turbo pitch also changed, more of a whistle than wooshing like the other one did.
Re: '78 300D turbo results - bgkast - 10-24-2008
Sorry, but NFW are you at 12 seconds 0-60. That's faster than the factory specs for the turbo cars (factory spec was around 15 sec off the top of my head). My car is around 15 seconds 0-60 with a factory turbo engine and VGT.
Re: '78 300D turbo results - GREASY_BEAST - 10-25-2008
+1
Re: '78 300D turbo results - ForcedInduction - 10-25-2008
+2, bgkast is right. Either your speedo is showing fast or you're thumb is moving fast.
Re: '78 300D turbo results - kamel - 10-27-2008
That may be so, the speedo stopped did take a poop a couple months back before I had the turbo. I don't see why a properly tuned (exhaust, intake, electric fan, no a/c, IP timing set to 26*btdc) N/A can't do 15s when the stock turbo 300D does it in 14.
But, I do think it's completely possible that I could be gauging the 0-60 wrong between driving, watching the gps, and starting and stopping a stopwatch.
Don't want to start a war over this, so the only way to see what it is and to remove the possibility of human error would be dyno, which I hope can happen soon.
Re: '78 300D turbo results - ForcedInduction - 10-27-2008
kamel I don't see why a properly tuned (exhaust, intake, electric fan, no a/c, IP timing set to 26*btdc) N/A can't do 15s when the stock turbo 300D does it in 14.
30% less power might have something to do with it.
Re: '78 300D turbo results - kamel - 10-27-2008
It was pretty craptacular stock, so the speedometer was probably way off. It's sounding more like I'm doing maybe 14 now. :oops:
Re: '78 300D turbo results - bgkast - 11-03-2008
Check your spedo at 60 with a gps, then use a vido camera to record your 0-60 run and time it from the video.
RE: '78 300D turbo results - JB3 - 08-24-2010
Obviously, this was 2 years ago now, but can you give us an idea of how the engine is doing after 2 years of turbo service?
I am doing a similar swap to my 240, and am looking for long term reports on the NA engine reliability after its been turbo charged.
RE: '78 300D turbo results - ForcedInduction - 08-24-2010
(08-24-2010, 07:56 AM)dropnosky and am looking for long term reports on the NA engine reliability after its been turbo charged.
It doesn't get much better than the original source.
http://papers.sae.org/780633/
RE: '78 300D turbo results - kamel - 08-24-2010
Hasn't given me any trouble aside from toasting the auto tranny. Redoing the manual driveline with a match balanced flywheel, custom driveshaft, stainless linkages, all hardline, and just general tidying up right now so its been a couple months since its been driven. That and the 110* summer heat is too hot to drive a car with no hvac. Haha
RE: '78 300D turbo results - JB3 - 08-24-2010
Thanks kamel,
ok, that makes 3 people on the board who have a turbo converted NA 240D or 300D with some decent mileage and time without it exploding on lower power settings, now I am further emboldened with my own project.
Thanks for the link forced, going to order up that paper, it will answer a lot of internal questions
RE: '78 300D turbo results - Captain America - 08-24-2010
What internal questions (answers) you looking for?