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300ZX Owners Club

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Is it the heater/air con fan?

Followers

October 31, 200421 yr

More questions, more questions...

When i press the heater button next to the auto button, the noise i get from my an going on is incredible, if im driving it seems to get worse as i put my foot down?!! Switch it off and its fine, any ideas, is it the heater fan i need to replace or sumthink? how easy is it to get at this if it is?

thanks,

rob

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October 31, 200421 yr

the fans on high are pretty loud but shouldnt get louder if you boot it, could be nackered fan or a dodgy aircon compressor, does it still make a noise if you press the "econ" button? would rule out the compressor if it does....

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October 31, 200421 yr

yes mate its noisy all the time when the things on...

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October 31, 200421 yr

the noise seems to speed up when you accelerate?

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Tyre size recommendations

Use this site or similar to get the rolling circumference difference when you change wheel diameter and tyre profiles.
It will tell you how much the speedo will over or under read, and the difference in overall diameter to work out if they will rub anywhere.
https://tiresize.com/tyre-size-calculator/

By craig · 34 minutes ago34 min
Simply Japanese at Beaulieu 19th July 2026

22 hours ago, nickz32 said:If I’ve built and installed my engine by then (which I bloody hope I have!) I’ll be there
Fingers crossed for you Nick!!

By RichardS · 1 hour ago1 hr
My daughter calls it Toothless the Dragon: My ‘95 TT Z

Happy to say work on my engine block is now finished! Billet main caps were found to be up to 4 thou out of round. This time they have been machined using the ARP’s that will be used during assembly (unlike last time by EPR!)

Cylinders were rebored to suit my 88mm CP pistons and cross hatching angle, depth and surface finish all set up for the Total Seal gapless piston ring pack I have chosen to use. I think I’ll be the first person on the UK to use Total Seal’s gapless piston rings on a VG30, so I’m looking forward to seeing if the live up to the hype

By nickz32 · 4 hours ago4 hr
Tyre size recommendations

Might be stating the obvious (to some) but something I didn't realise until I started trying to pick tyres for aftermarket wheels is that the profile figure - e.g. 40 - is 40% of the width.
So for a 255/40/17 tyre - diameter is 255mm, profile / side wall is 102mm (40% of 255), and radius is 17inches.
Learning this made it all make a lot more sense to me. I also have this graphic to refer to. Can't recall where I found it but it's now saved on my desktop!

I also wanted a chunky looking tyre with a solid side wall and after going 245(F) / 265 (R) , have since switched back to 235(F) / 255 (R) as I found the handling was noticeable more boggy and I use the car for fast road and track use. For ref, these tyres are on 18" BBS LMs.

By sumshiftyguy · 13 hours ago13 hr
UK Importers Advice

I used Josh @ Gorilla Imports in 2021. My first time importing and was a very good experience.

By sumshiftyguy · 13 hours ago13 hr

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