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My daughter calls it Toothless the Dragon: My ‘95 TT Z


nickz32

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Well this is a little annoying!

 

so I bought this SZ flywheel a little while back to replace my Z1 lightweight flywheel (that my old starter munched the ring gear on).

 

foolishly I just decided to send it and fitted it to the car without properly checking it.... silly boy. I went to take the car for a shakedown drive, only to find the clutch was slipping horrendously at idle manoeuvring speeds... off came the gearbox for an inspection as to what the chuff was going on

 

as you can see, the outer and inner circumference of the segments is a lighter colour.... that’s because they’re unworn high spots which my clutch decided to smoke itself upon.... doh! 
 

Second doh! moment is realising the segments for the SZ flywheel are no longer available.... balls

 

so I’ve had to buy a new flywheel, which I’ve gone for the new version of Z1’s light weight one piece flywheel, which should be here on Monday

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6 minutes ago, AndrewG said:

Do you happen to know why SZ have discontinued the flywheel (and spares)?

I can’t remember who told me this, but SZ basically said since Covid, the cost of raw materials has rocketed to the point it’s not longer profitable to make the flywheels..... why they’re not continuing to make the replacement segments, I can’t answer and am incredibly frustrated by!

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My flywheel prematurely wore out but thankfully they still sell the rebuild kits, which I bought. Jimmer said the cost of manufacturing the flywheels was too much, so SZ decided to stop making them. Not sure if it’s linked to COVID or not - sounded more like a long term thing and they’ve just had enough of the high costs. COVID may have been the last straw perhaps.


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Just checked the SZ website and it appears the rebuild kits are no longer available. I bought mine back in early May so I must have gotten one of the last sets!


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48 minutes ago, naz27 said:

Just checked the SZ website and it appears the rebuild kits are no longer available. I bought mine back in early May so I must have gotten one of the last sets!


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Yup, can’t find them anywhere, which is why I ended up buying a new flywheel.... a touch annoying given the biggest advantage of the SZ flywheel was its serviceability

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Yeah I thought you were mistaken when you said they didn’t sell the rebuild kits anymore, hence my first post! Such a shame to lose a quality product like that from the market. Hope the Z1 flywheel is all ok when fitted.


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New flywheel turned up today, which I promptly fitted.

 

The positives, the car is now mobile again and the clutch is back to feeling how it should!

 

the negative is that I’ve rediscovered a fault that I had forgotten about.... my power steering is notchy as hell! I suspected originally it was an air lock in the system, but now I’m not so sure.... looks like some more fault finding in the immediate future

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  • 5 weeks later...

Been a busy week or so working on the Z.

 

Unfortunately she developed a fairly significant oil leak last week that took an age to track down. After lots of time trying to trace it, I found it in the most unlikely of places.

On the heads, these oilways are normally blocked up like the sludge traps on the crank. During the rebuild these were drilled out, tapped and sealed with a grub screw and sealant. Unfortunately, the sealant did not go off and set and the high oil pressure has basically pushed past it. One of those things that couldn’t have been expected.

 

so I removed, cleaned and resealed with Ering  Driko Grey high temp RTV, left it overnight to make sure it set and reassembled…. Have to admit, was nice to have a good look at my BDE pulleys again

 

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Another job off the list was giving the coolant overflow a bit of a refresh as it was looking a little scabby.

I used Bilt Hamber autofoam on the inside and Surfex HD degreaser on the outside with a green scotch pad…. Not quite “new” but not far off!

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1 hour ago, AndrewG said:

Well done Nick, great to see the old girl back on the road again! Would love to see the car in the metal soon.

Thanks mate!

 

There are still a few niggles to sort through, but nothing that’ll stop me taking the tops off and enjoying it. Unfortunately I’ve got commitments this weekend so I cant make Simply Japanese, but i should be able to make any future meet and greets

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  • 2 weeks later...

Well it’s been just over a week since she’s been MOT’d and all is going well so far.

 

ive had a couple of small niggles to sort out with the Haltech. The long and short of it is that the Long Term Fuel Trim feature on the haltech wasn’t working. 
This feature basically looks at your target AFR number for each cell of the map, then looks at the AFR number the map is actually generating in that cell and auto adjusts that cell in the map to make the actual AFR fall in line with the target AFR…. It’s basically an auto tune feature.

So after Haltech USA remote connecting to my ecu and having a look at what was going on, we could see that all the preconditions for LTFT were being met, yet LTFT wasn’t activating. We eventually figured out that my base map was corrupt. Haltech suspect that it’s either due to a cross compatibility issue with the basemap (that was written on an old version of the firmware, while my ecu is on the latest version) or at some point in the transfer from laptop to ecu it’s corrupted.

Rick @ Haltech USA took my map and copied all my sensor calibrations, setting, inputs etc and wrote a new map from scratch for me, which did the trick and LTFT’s are now working properly.


The advantage of LTFT  is that road conditions and traffic load load the engine in such an infinite number of ways, it means that as a whole I should have a more complete map as well as leaving my tuner more time to focus on WOT tuning.

 

She’s now idling as she should


However, she’s just too loud for my tastes now. So I’ll be revisiting the exhaust setup in the near future to add another couple of silencers and a resonator to kill off some of the drone, for a more civilised exhaust volume

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