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WOT rattling


James
Does lots of head


Galant VR-4 org Post #: 1108615 posted 02/15/13 03:47 PM     Remind Me!  Send Private Message   Edit Post      
I don't expect a specific answer for this, but its worth a try I guess.

Under WOT I hear a type of... Rattle noise... From the driver side of the engine bay. It sounds almost as if you had a big bag of marbles and were bouncing the bag around. It's only under full throttle that I hear it. Sounds like maybe from the head? Hard to tell from the drivers seat. I've investigated it, couldn't find any loose bolts or fittings or anything.

Now I do think I have a pulley getting ready to go out but I don't think the two noises are related. Under normal cruising condition with maybe 25% throttle I get a wobble sound. Goes away with more or less throttle.



1990 Summit White Galant GSX
Chipped EPROM ECU/2g maf/550cc injectors/3in exhaust /E316G/FMIC/Wally255/AeromotiveAFPR/lower shores MBC

Posts: 1322 | From: Port richey Florida | Member Since: 04/08/12 | IP: (166.147.120.162) | Report this post to a Moderator

MellowVR4
5" too short
372/2000


Galant VR-4 org Post #: 1108617 posted 02/15/13 04:03 PM     Remind Me!  Send Private Message   Edit Post      
maybe a harmonic balancer?



89 RAIDER V6 5speed
90 GALANT GSX SOLD
91 372/2000 making it pretty again
91 578/2000 sold
92 417/1000 DIED
87 4RUNNER LS400 SWAP SOLD:(

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James
Does lots of head


Galant VR-4 org Post #: 1108620 posted 02/15/13 04:06 PM     Remind Me!  Send Private Message   Edit Post      
The rattle, wobble, or both?

That was my guess for the wobble. Or water pump. But I can't see how the pullies can make that chatter.

The car idles fine, drives fine, pulls strong. Nothing in the oil, coolant is clean.



1990 Summit White Galant GSX
Chipped EPROM ECU/2g maf/550cc injectors/3in exhaust /E316G/FMIC/Wally255/AeromotiveAFPR/lower shores MBC

Posts: 1322 | From: Port richey Florida | Member Since: 04/08/12 | IP: (166.147.120.164) | Report this post to a Moderator

MellowVR4
5" too short
372/2000


Galant VR-4 org Post #: 1108623 posted 02/15/13 04:28 PM     Remind Me!  Send Private Message   Edit Post      
when did this issue become noticable



89 RAIDER V6 5speed
90 GALANT GSX SOLD
91 372/2000 making it pretty again
91 578/2000 sold
92 417/1000 DIED
87 4RUNNER LS400 SWAP SOLD:(

Posts: 1653 | From: Milwaukee, Wi | Member Since: 07/25/09 | IP: (63.111.38.82) | Report this post to a Moderator

James
Does lots of head


Galant VR-4 org Post #: 1108627 posted 02/15/13 04:36 PM     Remind Me!  Send Private Message   Edit Post      
I would say... After a cracked the valve cover? Two hairline cracks. I assume the notice was just sounds coming from the head and was more noticeable due to the cracks letting sound through.

I have a new valve cover and gasket now.



1990 Summit White Galant GSX
Chipped EPROM ECU/2g maf/550cc injectors/3in exhaust /E316G/FMIC/Wally255/AeromotiveAFPR/lower shores MBC

Posts: 1322 | From: Port richey Florida | Member Since: 04/08/12 | IP: (166.147.120.147) | Report this post to a Moderator

James
Does lots of head


Galant VR-4 org Post #: 1108630 posted 02/15/13 04:48 PM     Remind Me!  Send Private Message   Edit Post      
But also, prior to that I was unable to to a real pull in the car due to phantom knock and boost creep. Along with loud lifters. I fixed all of this at the same time. So the problem could have been from before but went unnoticed.

The wobble has been there since I got the car.



1990 Summit White Galant GSX
Chipped EPROM ECU/2g maf/550cc injectors/3in exhaust /E316G/FMIC/Wally255/AeromotiveAFPR/lower shores MBC

Posts: 1322 | From: Port richey Florida | Member Since: 04/08/12 | IP: (166.147.120.166) | Report this post to a Moderator

turbowop
Hard Snarker
1051/2000



Galant VR-4 org Post #: 1108632 posted 02/15/13 04:55 PM     Remind Me!  Send Private Message   Edit Post      
Hopefully it's not really bad audible detonation.



-Mark

A face only a grocery shopper could love.
1051

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MellowVR4
5" too short
372/2000


Galant VR-4 org Post #: 1108633 posted 02/15/13 05:01 PM     Remind Me!  Send Private Message   Edit Post      
^ whats that?



89 RAIDER V6 5speed
90 GALANT GSX SOLD
91 372/2000 making it pretty again
91 578/2000 sold
92 417/1000 DIED
87 4RUNNER LS400 SWAP SOLD:(

Posts: 1653 | From: Milwaukee, Wi | Member Since: 07/25/09 | IP: (63.111.38.82) | Report this post to a Moderator

James
Does lots of head


Galant VR-4 org Post #: 1108635 posted 02/15/13 05:10 PM     Remind Me!  Send Private Message   Edit Post      
Logger shows no knock. And like I said, it pulls hard at 18psi.



1990 Summit White Galant GSX
Chipped EPROM ECU/2g maf/550cc injectors/3in exhaust /E316G/FMIC/Wally255/AeromotiveAFPR/lower shores MBC

Posts: 1322 | From: Port richey Florida | Member Since: 04/08/12 | IP: (166.147.120.145) | Report this post to a Moderator

MellowVR4
5" too short
372/2000


Galant VR-4 org Post #: 1108649 posted 02/15/13 05:50 PM     Remind Me!  Send Private Message   Edit Post      
Axle support bearing?



89 RAIDER V6 5speed
90 GALANT GSX SOLD
91 372/2000 making it pretty again
91 578/2000 sold
92 417/1000 DIED
87 4RUNNER LS400 SWAP SOLD:(

Posts: 1653 | From: Milwaukee, Wi | Member Since: 07/25/09 | IP: (63.111.38.82) | Report this post to a Moderator

James
Does lots of head


Galant VR-4 org Post #: 1108656 posted 02/15/13 06:05 PM     Remind Me!  Send Private Message   Edit Post      
I'll check that out on my next day off! I didn't think suspension. The sound "sounds" like its coming from higher up than that but who knows with how sound travels



1990 Summit White Galant GSX
Chipped EPROM ECU/2g maf/550cc injectors/3in exhaust /E316G/FMIC/Wally255/AeromotiveAFPR/lower shores MBC

Posts: 1322 | From: Port richey Florida | Member Since: 04/08/12 | IP: (166.147.120.161) | Report this post to a Moderator

5OF2k
Member ++
5/2000


Galant VR-4 org Post #: 1108693 posted 02/15/13 09:58 PM     Remind Me!  Send Private Message   Edit Post      
Does the car still have the balance shafts??



1993 Talon TSI, FPgreen DD
1957 VW Beetle Sedan Deluxe
1997 Civic EX, B18c/5lug swapped
2002 Yamaha Fz-1
Looking for another GVR4, or 5/2000...PM!

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James
Does lots of head


Galant VR-4 org Post #: 1108701 posted 02/15/13 10:52 PM     Remind Me!  Send Private Message   Edit Post   
Good question I've never checked. They removed all the emissions, egr, ect stuff that everyone removed so I would assume the PO did a balance shaft elimination on his rebuild. But ill double check to be sure.

I assume you are suggesting that for the wobble noise and not the chatter.



1990 Summit White Galant GSX
Chipped EPROM ECU/2g maf/550cc injectors/3in exhaust /E316G/FMIC/Wally255/AeromotiveAFPR/lower shores MBC

Posts: 1322 | From: Port richey Florida | Member Since: 04/08/12 | IP: (68.200.64.80) | Report this post to a Moderator


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