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#1
06-26-2005, 09:06 AM
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603 head installed, hissing sound when rotating...
ok, so i installed the head on my 603, temporarily installed cam and sprocket without installing lifters, installed glowplugs and injectors...
when i rotate the engine manually i feel compression resistance as expected, valves are shut because of uninstalled lifters, though i do hear hissing, air rushing out somewhere... is this normal/expected? i'm not positive but i think they're coming from the valves? the valves are new as are the seats and guides. (Not yet seated properly) it could very well be hissing from the piston rings... how do i make sure everything is sealed properly? (injectors, GPs, valves... do i put anything on the GP, injector threads? like teflon tape or something? or do i just screw them right in? thanks guys
__________________
 85 190E 2.3(SOLD) 86 230E (-->300D) sold 87 300D (-->300TD) sold 68 250S w/ a 615 and manual tranny (RIP) 87 300TD (SOLD) 95 S280 "The KRAKEN" (Turbo 2.9 602 transplant) traded 86 190E 2.3... current project 
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#2
06-26-2005, 09:14 AM
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hissy
yes you will hear hissing from air escaping around valves and the rings. more oil on the rings and such will probably seal it up more.
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#3
06-26-2005, 09:34 AM
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yahoo... so i'm still on the right track i guess.
 i'll probably fire it up tomorow. wish me luck!
__________________
85 190E 2.3(SOLD) 86 230E (-->300D) sold 87 300D (-->300TD) sold 68 250S w/ a 615 and manual tranny (RIP) 87 300TD (SOLD) 95 S280 "The KRAKEN" (Turbo 2.9 602 transplant) traded 86 190E 2.3... current project
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#4
06-26-2005, 02:30 PM
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I take it the injectors are in place? Check that air isn't leaking out through the prechamber retainers from poor prechamber-to-head fit.
If the manifolds are off you should be able to hear/feel air rushing out the runners if that's where you think it's leaking. Sixto 95 S420 87 300SDL
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#5
06-26-2005, 09:29 PM
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the injectors are on, so is the intake manifold, i'll probably put soapy water around the injectors and prechamber to check for leaks... ok to do that?
__________________
85 190E 2.3(SOLD) 86 230E (-->300D) sold 87 300D (-->300TD) sold 68 250S w/ a 615 and manual tranny (RIP) 87 300TD (SOLD) 95 S280 "The KRAKEN" (Turbo 2.9 602 transplant) traded 86 190E 2.3... current project
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#6
06-26-2005, 11:49 PM
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soapy
should be ok.
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual. [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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