Pog’s X1/9

[BiTurbo228]

Well I had it in my head that the 4-stud Maseratis had some weird PCD that no-one else used (4x96 or something), but perhaps it was just a very confident typo! Wheels look great.

I feel your pain with 14" tyres though. Really that's what I'd want for the Spitfire but the selection is just terrible so I've gone for 15s.

[ThePog]

1 hour ago, BiTurbo228 said:

Well I had it in my head that the 4-stud Maseratis had some weird PCD that no-one else used (4x96 or something), but perhaps it was just a very confident typo! Wheels look great.

I feel your pain with 14" tyres though. Really that's what I'd want for the Spitfire but the selection is just terrible so I've gone for 15s.

Well they do, but it is just the weird Italian 4x98. I guess the Italian manufacturers shared info so as not to reinvent stuff. I mean the PCD and bore size are pretty specific, there is no way they would come to that independently..

[anglia4]

Fuck I lol'd at the paint tin diff in that micra. What a cool project.

Possibly only cooler if it was in the back of an X1/9 

[HumberSS]

Just turn your stereo up. When did you start caring about such things? It's prob factory. 

[ThePog]

26 minutes ago, HumberSS said:

Just turn your stereo up. When did you start caring about such things? It's prob factory. 

What fucking stereo?

Irl it is pretty loud at certain revs.

It is more that the list of potential sources that were not the solution started getting comically long, and it has become a matter of principle now.

[VitesseEFI]

12 hours ago, ThePog said:

It is more that the list of potential sources that were not the solution started getting comically long, and it has become a matter of principle now.

Do you know where all your 10mm spanners are?  Really?

But seriously, if this is now your biggest problem on this car, you are definitely winning 

[ThePog]

Yea its kindof makework, but at times it will distract from the sound of the engine so fixing it is paramount.

[GregT]

I'd go back to the doors. Lot of volume in those and enough bits of linkage flapping about to make the noise. Ours had loose shit in the bottoms of both doors.

[Tiger Tamer]

rattles are a pita to find.

[GregT]

The old man told the story of when he was foreman at Croziers in ChCh prewar - the Austin agents. Austin 10 with a rattle no-one could find. He pulled out all the seats except the drivers and got an apprentice to drive him round town while he crawled around the interior. Tracked it to a B pillar. Cut it open and there was a 5/16 whit bolt sitting in there. Someone on the assembly line playing silly buggers.

[ThePog]

I found another potential source and fixed it. Like a complete fucking idiot and against all previous experience I am quietly confident that this is the one. 

Will report in with probably disappointing news.

[Sungai Sungai]

Probably a stupid question but is the rattle only in driving conditions? No way to reproduce it while stationary? I used a mechanics stethoscope recently to diagnose a clonk/rattle in a friends civic, it really helped me narrow down the area it was coming from; but we were able to recreate the clonk in the driveway so i didn't have to strap myself to the bottom of the vehicle like keanu reeves in the 1994 smash hit film Speed.

Sound can be tricky, sometimes its not coming from where you think its coming from at all. 

[ThePog]

6 minutes ago, Sungai Sungai said:

Probably a stupid question but is the rattle only in driving conditions? No way to reproduce it while stationary? I used a mechanics stethoscope recently to diagnose a clonk/rattle in a friends civic, it really helped me narrow down the area it was coming from; but we were able to recreate the clonk in the driveway so i didn't have to strap myself to the bottom of the vehicle like keanu reeves in the 1994 smash hit film Speed.

Sound can be tricky, sometimes its not coming from where you think its coming from at all. 

Yea I discovered that I can make it happen while stationary, but its at enough revs that you wouldn't want to do it from cold. My major rattle finding expedition was after I had gone for a drive so I could start it up and give it a rev. However I was admonished by the boss for being excessively noisy.

I bought an endoscope the other day just on general principle, that has been good for checking that there are no loose bits sitting in cavities etc.

[Sungai Sungai]

@ThePog in a couple of weeks if he cant find this rattle

[ThePog]

[BiTurbo228]

Reminds me of when I was chasing an intermittent dodgy running problem in my X1/9. Seemed to happen at total random one day to the next about whether it would run or not. After months of mucking about with this, that and the other I noticed it seemed to be ok if it had been dry for a while and less ok if it had rained heavily.

What was happening is if I parked at the wrong angle rain was dripping from one of the engine cover drains directly onto the main loom going through the bulkhead to the ECU (Uno Turbo swap). It was tracking along the wires by capillary action, into the electrical tape wrap, through the bulkhead grommet and eventually leaking out directly into the ECU plug, shorting out various different pins. Because it was only a small amount of water it would dry up quickly and I'd be none the wiser unless I caught it at exactly the right moment.

Feel like it's going to be same sort of Rube-Goldberg fuckery causing something totally unrelated to rattle in your car.

Either that or the little dogbone link tapping on something which is super common...

[yoeddynz]

On 12/08/2024 at 20:09, ThePog said:

it is pretty loud at certain revs.

So is mine. Maybe if we drove in convoy the frequencies will cancel each other out? 

[ThePog]

I now imagine hiring someone to just sit in the passenger seat and scream at the right frequency.

[Alfashark]

26 minutes ago, yoeddynz said:

So is mine. Maybe if we drove in convoy the frequencies will cancel each other out? 

Or make it many times worse...

A few haircuts ago I was in a mate's 120L with our patented performance exhaust - Cast manifold, downpipe into 300mm Coby, meaning the entire exhaust from the fourth port to tip was in the order of 800mm - When we happened upon a well-modded Mk2 Escort. Side by side at 70 created an absolutely brain destroying resonance.

[Sunbeam]

Makes you realise how horrendous the later model bumpers are when you see it next to yours