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#16
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Eh, I was just pointing out that Justin seemed to have the impression (from your reply) that the relatively simple mod you did would be the same in our cars. It isn't. Doesn't mean it can't be done. Same engine, different body style. It is tighter up front in a W124.
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=-=-=-=-= 1987 300TD 231,000 #22, afterglow, plastic fan, euro lights, alternator upgrade, cluster housing update |
#17
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I'm sure it is still quite possible though
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-justin 1987 300TD, 1987 300TD 2008 R32, 2000 Passat Wagon |
#18
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When I had the wastegate hose disconnected from the 617 for a test, the turbo speeds increased markedly and the turbo noise was definitely noticeable. Additionally, the boost climbed up to 19 psi. Don't ignore this issue........... |
#19
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thanks brian.
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-justin 1987 300TD, 1987 300TD 2008 R32, 2000 Passat Wagon |
#20
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You can pick up a 2" diameter vacuum/boost (up to 30 psi) gauge off the shelf at Advance or Autozone for $40. If you care for the looks, you can even install it permanently later on.
__________________
Just say "NO" to Ethanol - Drive Diesel Mitchell Oates Mooresville, NC '87 300D 212K miles '87 300D 151K miles - R.I.P. 12/08 '05 Jeep Liberty CRD 67K miles Grumpy Old Diesel Owners Club |
#21
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Is 14 PSI under load above 3k RPMs OK or too high?
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-justin 1987 300TD, 1987 300TD 2008 R32, 2000 Passat Wagon |
#22
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16 is definitely excessive and there is no assurance that it stops at 16 if you had it under full load climbing a hill. Have you verified the wastegate hose is intact with no cracks or leakage? |
#23
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Definitely check the hose. Mine was long since rotted in two from the oil via the breather hose and the heat at 132K miles when I bought the beast. Just glad I babied it on the 80 miles home from the dealer until I had a chance to give it a thorough going over.
A piece of 1/4" ID thick wall fuel injection hose makes a workable replacement, until when/if you decide to replace it with the purpose-made hose. By way of comparison, I tested mine just a few days ago with the same gauge. From 45 mph going up a good hill, I floored it and activated the kickdown switch. Pressure went up to 14 psi and held there, all the way up to 4000 rpm at some ungodly speed where it finally dropped into 4th, and I backed off before the local constabulary could nail me for doing well in excess of the 45 mph speed limit. Cruising level ground at 55 to 60 boost was 2 to 4 psi. Interstate cruising with cruise control on was 4 to 6 psi at 65 depending on terrain. Holding the cruise lever up for full accel on the interstate to get from 60 to 70 pushed it up to 10 psi, dropped back to 5 psi as soon as I let cruise take back over. I'll let Brian be the judge whether this is anywhere close to acceptable norms. Gawdalmighty, but this thing will fly when you floor it!
__________________
Just say "NO" to Ethanol - Drive Diesel Mitchell Oates Mooresville, NC '87 300D 212K miles '87 300D 151K miles - R.I.P. 12/08 '05 Jeep Liberty CRD 67K miles Grumpy Old Diesel Owners Club |
#24
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#25
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Possible factors for the 14 psi/4000 rpm - after I repaired the hose, the wastegate actuator hasn't been adjusted. It was full of oil, I sprayed brake parts cleaner well up into it using the small red straw that came with the spray can, then blew out well with LP air using the same method. Definite possibility that it is somewhat out of adjustment.
That is a relatively cheap gauge I was using. I doubt that the calibration standards are to the same degree we used on submarines, and a 1 or 2 psi error either way is a possibility. ALDA is still virgin. Same oily situation as with the wastegate actuator, and same cleaning method. Verified all lines and ports running to it free and clear. Overboost sensor is original and was plugged up pretty well. Cleaned it out, but no guarantees. Some fool kid put BB's in the vac lines to the EGR and ARV prior to the test. Boost didn't immediately peg at 14. It zoomed up rather quickly to 12, then seemed to strain to reach 14 by the time it hit 4000 rpm.
__________________
Just say "NO" to Ethanol - Drive Diesel Mitchell Oates Mooresville, NC '87 300D 212K miles '87 300D 151K miles - R.I.P. 12/08 '05 Jeep Liberty CRD 67K miles Grumpy Old Diesel Owners Club |
#26
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I have a suspicion that none of the 20 year old overboost sensors will actually work. The sensor on the 617 doesn't work..........accumulated soot over 20 years probably knocks most of them out.
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#27
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Found the problem, my wastegate hose is not cracked it just disconnected from the housing.
I haven't had a chance to replace it yet, since I just finally noticed it while filling up at the fuel station. Is this hose anything special or would they have something suitable at Autozone/Napa Auto/etc..?
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-justin 1987 300TD, 1987 300TD 2008 R32, 2000 Passat Wagon |
#28
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I've got a $1.00 piece of 3/8" fuel hose on the SD. Ought to last two years or so. |
#29
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You may need a compression clip on the end where it fits the nipple.
__________________
'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting! |
#30
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I bought a 3/8" section of hose from Autozone, the inner-diameter was about a 1/4" too big. Back to AZ or Napa Auto for the right hose. This time I'm going with my original hose in-hand. Where mine broke seems common, because the wagon in my garage that I'm rebuilding is broke at the same spot. It wasn't broken until I tried to pry it off though.
__________________
-justin 1987 300TD, 1987 300TD 2008 R32, 2000 Passat Wagon |
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