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EGR disconnect
Hey guys , yesterday I had a chance to work on my new to me 1983 300cd , I found a few hose's that were not making any positive seals ...especially on the control valves on the valve cover .
I used some small zip ties to seal them , but from all the reading I have found it may make more sence for me to remove that whole mess . Can anyone walk me though what I should remove , can I remove the EGR and block it off ? By just zip tying the leaks I found made a huge difference in stabilizing my shift of the transmission , will I have to re-adjust modulator once I remove the EGR system ? Thanks greg |
#2
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126/603 QUestion
I don't know how similer your 83 is, but here is a diagram for a 603. Remove everything to the left of 67(vacuum pump). You can also completly remove line A.
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
#3
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K |
#4
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Sometimes a pic simplifies things.
The first nipple from the booster line feeds only to the VCV & trans (now minus EGR). The second nipple runs everything else. http://www.peachparts.com/shopforum/attachments/diesel-discussion/54584d1209260062-too-much-vacuum-vcvlines.jpg |
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Quote:
And, you do know how dissimilar the '83 is because you owned one (an SD with a 617). |
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Just trying to help, delete it than I don't care.
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
#7
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Add step #6
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Contact Brian and order the system to remove the EGR valve totally and block off the holes. I did the 6 step method and very pleased with both the performance improvement and the less clutered engine bay. Charles |
#8
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Thanks guys ! I just placed a nice order with phil for some parts to button up some small leaks , hopefully that stuff comes in this week and when I have the valve cover off I will get her all cleaned up .
Thanks greg |
#9
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Why use the blocker plate?
So after disconnecting the vacuum lines going to the EGR, why then install the blocker plate? If the EGR remains bolted on with no vacuum lines attached, isn't that the same effect?
Please put me in the know Thanks you!
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Cousin Dave 83' 300SD 250k+ and going strong! Take the best that exists, make it better! If it doesn't exist, create it! Accept nothing nearly right or good enough! |
#10
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The plate has no effect on function. It simply allows removal of the valve completely for a cleaner underhood look.
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#11
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Quote:
Thanks!
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Cousin Dave 83' 300SD 250k+ and going strong! Take the best that exists, make it better! If it doesn't exist, create it! Accept nothing nearly right or good enough! |
#12
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Unfortunately its possible the valve does not seat completely from carbon and wear, pressure in the exhaust manifold can also push it open. Putting a plate under the face makes 100% sure that no exhaust is getting into the intake. Even a cut up coke can will make a great blocker plate if you are keeping the valve in place.
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#13
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Quote:
Thanks!
__________________
Cousin Dave 83' 300SD 250k+ and going strong! Take the best that exists, make it better! If it doesn't exist, create it! Accept nothing nearly right or good enough! |
#14
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Yeah, I used the gasket as a template and cut a blockoff plate from a piece of furnace ducting (medium thickness and zinc plated on both sides) and two gaskets from a scrap piece of sheet gasket material I had. Sandwiched the steel plate between the two pieces of gasket and bolted the EGR back onto the manifold. Looks totally stock, but totally disabled. Worked like a charm, and seems like I may have picked up about 1 extra mpg.
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1984 300 Coupe TurboDiesel Silver blue paint over navy blue interior 2nd owner & 2nd engine in an otherwise 99% original unmolested car ~210k miles on the clock 1986 Ford F250 4x4 Supercab Charcoal & blue two tone paint over burgundy interior Banks turbo, DRW, ZF-5 & SMF conversion 152k on the clock - actual mileage unknown |
#15
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Manifold pressure cannot force it open unless the pressure is way above specification or the spring is broken.
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