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914World.com _ 914World Garage _ what in the world is my rattle

Posted by: bd1308 Aug 24 2005, 12:29 PM

not dizzy, not pre-ignition....(present in all extremes of timing)

what in the world could this be?

did i snap a piston ring or something, is it piston slap, engine ticking until it goes KABLOOM or what?

sounds like someone put a nut in the fan and its goign clak clak somewhere...under moderate acceleration..

seems vibration related really, as when i first let out on the clutch i hear it for a second.

Posted by: SGB Aug 24 2005, 12:39 PM

this may seem whacked, but check the brake lines at the firewall where the perportioning valve is. I had one line that vibrated against the firewall at certain RPMS and load conditions and made a sound like you are describing.

Posted by: "7" Aug 24 2005, 12:40 PM

That happened to me too -
I removed my wife from the trunk & the strange noise stopped.

Posted by: tat2dphreak Aug 24 2005, 12:41 PM

maybe you are running too lean from feeding your engine through a fucking straw...

is there a "pinging" sound? loose valves? when was your last valve adjust? did your VW mecahinc friend do it? i HIGHLY DOUBT you sontaneously dropped a piston ring or a wrist pin... but with you, who knows?

did you do a compression check? do you know HOW to do a compression check?

help us out here... we can't heard it over the net through your post...

or take it to a real mechanic that KNOWS type 4s... not just type 1s

Posted by: bd1308 Aug 24 2005, 12:43 PM

that's what i'm doing. i'm finished messing with the dumb car....

Posted by: scott thacher Aug 24 2005, 12:44 PM

check you engine and tranny mounts, and while under there take a small rubber hammer and hit the tins, HE, every thing that can move or viberate. does the sound come from the middle of the car, back ???. i wonder if your throw out bearing is going bad ie, the sound when you let off the clutch

Posted by: tat2dphreak Aug 24 2005, 12:46 PM

it could be 1000 things with the descriptions used... things do get loose on 30+ year old cars...

Posted by: bd1308 Aug 24 2005, 12:47 PM

engine mounts are okay---

one tranny mount was kinda ugly...but still held.

i hear ya, i know i'm being stupid here by asking what a rattle sound is....

i'll just take it to the mechanic, the porsche one.

Posted by: tat2dphreak Aug 24 2005, 12:51 PM

QUOTE (bd1308 @ Aug 24 2005, 01:47 PM)
engine mounts are okay---

one tranny mount was kinda ugly...but still held.

i hear ya, i know i'm being stupid here by asking what a rattle sound is....

i'll just take it to the mechanic, the porsche one.

a p-car mech may not know t4s either... oh nevermind...

Posted by: bd1308 Aug 24 2005, 12:53 PM

naw, this guy is good.

he's kinda far away, but he AX'd 914s in the 70s and 80s....

he has a 914/6

he's done many restorations on 914s, complete tear-downs and what-have-you.

Posted by: Travis Neff Aug 24 2005, 01:12 PM

Pebbles in the melon?

Posted by: bd1308 Aug 24 2005, 01:27 PM

QUOTE (Travis Neff @ Aug 24 2005, 01:12 PM)
Pebbles in the melon?

oh my....That's it....I beat my head against the wall and it made the same sound...

Posted by: tat2dphreak Aug 24 2005, 01:38 PM

QUOTE (Travis Neff @ Aug 24 2005, 02:12 PM)
Pebbles in the melon?

I was thinking it was a "loose nut behind the wheel"

Posted by: Aaron Cox Aug 24 2005, 01:44 PM

brain rattling around in your head? or the gears in your mind that need lubing....

Posted by: Joe Ricard Aug 24 2005, 01:54 PM

QUOTE (bd1308 @ Aug 24 2005, 11:27 AM)

QUOTE (Travis Neff @ Aug 24 2005, 01:12 PM)
Pebbles in the melon? :lol:

oh my....That's it....I beat my head against the wall and it made the same sound...

Just keep doing what you are doing it will stop.