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#1
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'thunk' when shifting into reverse - only when cold
Transmission shifts great otherwise, has external cooler and the quick change shift kit. once car is warmed up 2-3 minutes it shifts into reverse without problem. When cold it 'thunks' and it doesn't seem smooth going into reverse. no problems with other gears ever. Trans mount? Or is line pressure bad when cold?
Thanks as always, David |
#2
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Re: 'thunk' when shifting into reverse - only when cold
bump por favor - would appreciate thoughts on this.
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#3
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Re: 'thunk' when shifting into reverse - only when cold
You've gotta give more time than a couple hours for a response...
It could be the rubber in the mounts showing age, could be a number of things. Can you hear the clunk and where it is coming from or do you just feel it? |
#4
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Re: 'thunk' when shifting into reverse - only when cold
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You're right sorry. I think it's a combination of sound and feel. |
#5
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Re: 'thunk' when shifting into reverse - only when cold
Any thoughts folks?
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#6
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Re: 'thunk' when shifting into reverse - only when cold
__________________
www.svxfiles.com The first SuperCharged SVX, the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway Fiberglass Hood thread My locker 4.44 Swap link |
#7
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Re: 'thunk' when shifting into reverse - only when cold
The rear differential rubber mounts, when shot, make that sound when shifting into reverse...very carefully, with parking brake on, maybe wheels chocked, look under rear of car, at the mounts, while someone shifts into reverse...
__________________
Cheers! Gordon 1997 Ebony #308 113k "The Black Diva"SOLD 1992 Black over Liquid Silver 152k SOLD 1992 Ebony 251k 444 SOLD 1999 Silver SLK230 134k SOLD 1997 Green Outback 137k SOLD 2013 Honda Accord I4 SOLD 2015 Subaru Crosstrek 30k 2018 Tesla M3 30k |
#8
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Re: 'thunk' when shifting into reverse - only when cold
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#9
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Re: 'thunk' when shifting into reverse - only when cold
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Thank you! |
#10
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Re: 'thunk' when shifting into reverse - only when cold
If the rear diff mounts turn out to be the problem, I have an awesome fix for you: http://svxworldforums.com/view_topic...65&forum_id=13
The subframe bushings aren't necessary, and you don't have to cut away as much of the diff bushing inserts as that guy did. Just cut a little bit at a time and try to squeeze them in there until they fit. I have been running these on my blue car since the 6-speed swap and they're great.
__________________
'94 Laguna Blue LSi ~159k.......JDM ultra short-geared 3.900 STi Version 7 6-speed w/ Cobb shortshifter, ECUtune 244,8.1mm/256,9.1mm i/e cams, group N motor mounts, '97 grille, JDM clear corners, Momo JDM Legacy GT steering wheel, apkarian's LED tails, silver STi BBS wheels, PWR radiator, redstuff pads f/r, drilled/slotted rotors, bontragerworks rsb #18, Koni/GC 450f/375r coilovers, Megan Racing adjustable lateral links, KMac c/c plates, Stebro exhaust, ECUtune 1v5, Optima battery in the trunk where it belongs. Turbo project '97 Ebony LSi ~137k #036.......Power mode mod, JDM clear corners, BBS wheels. AUX/pocket mod Now a mod "over there" ............Photo album |
#11
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Re: 'thunk' when shifting into reverse - only when cold
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#12
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Re: 'thunk' when shifting into reverse - only when cold
YOU said"Any thoughts folks?"
So I said what all us guys were thinking!
__________________
www.svxfiles.com The first SuperCharged SVX, the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway Fiberglass Hood thread My locker 4.44 Swap link |
#13
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Re: 'thunk' when shifting into reverse - only when cold
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However the bushings are up tp $7.99 each now so its now $16.00, plus tax.
__________________
www.svxfiles.com The first SuperCharged SVX, the first 4.44 gears, the first equal length headers, the first phenolic spacers, the first Class Glass fiberglass hood, the first with 4, 4.44s in his driveway Fiberglass Hood thread My locker 4.44 Swap link |
#14
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Re: 'thunk' when shifting into reverse - only when cold
The 15 minute mod will help too, depending on which part is wobbling, but that set of bushings comes with some inserts you can use to do basically the same thing, so you can kill two birds with one stone basically.
The diff insert bushings stiffen things up quite a bit. If your bushing mounts aren't completely trashed they are a decent alternative to replacing them (those are a massive PITA for the DIYer).
__________________
'94 Laguna Blue LSi ~159k.......JDM ultra short-geared 3.900 STi Version 7 6-speed w/ Cobb shortshifter, ECUtune 244,8.1mm/256,9.1mm i/e cams, group N motor mounts, '97 grille, JDM clear corners, Momo JDM Legacy GT steering wheel, apkarian's LED tails, silver STi BBS wheels, PWR radiator, redstuff pads f/r, drilled/slotted rotors, bontragerworks rsb #18, Koni/GC 450f/375r coilovers, Megan Racing adjustable lateral links, KMac c/c plates, Stebro exhaust, ECUtune 1v5, Optima battery in the trunk where it belongs. Turbo project '97 Ebony LSi ~137k #036.......Power mode mod, JDM clear corners, BBS wheels. AUX/pocket mod Now a mod "over there" ............Photo album |
#15
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Re: 'thunk' when shifting into reverse - only when cold
I'm confused. All you guys thought that me asking a question had something to do with 'girlz'? Your humor is going right over my head here bro.
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