There have been a couple of guys who wanted to know how to read a compressor map. Hopefully, I haven't made any mistakes this time (unlike the last) and this will prove to be useful to you in your understanding of a compressor map. Reading a turbo map isn't as difficult as it looks. The map displays 4 key pieces of information. A. It displays the pumping efficiency of the compressor (meaning the amount of actual air that it pumps in contrast to the amount of heat that's created while wasting e...

General Tire/Wheel info:
Tire Calc: http://www.miata.net/garage/tirecalc.html
Alt Tire Calc: http://www.1010tires.com/TireSizeCal...?action=submit
Tire Info: http://www.discounttiredirect.com/di...foTireMath.jsp 5x115 The 1ST # is the number of lugs. The 2ND is the spacing between the lugs, measuring center point of the lug to the next lug. have heard that 5x114.3 from something like a mustage will work. Our wheels have an offset of +40. Offs...

It seems that ALL the cruise control stalks you find at the JY nowadays are non-working. The Cruise switch doesn't work. Tired of paying $40 for a new stalk, I decided to dismantle and attempt repairs to what I had.

The stalk is glued together and there will be some minor cosmetic damage during the dis-assembly, but if you file down the burs before gluing it back together it is not serious.

This is the stalk I am going to repair.
First, separate it at the join...

Pictures of tear down and re-seal of Harrison V5 air conditioning compressor. These are very common on the 60°V6 engines. They are very costly as a re-manufactured unit. The parts to re-seal them are about $30. I did this write-up for another forum but figured it would have interest here. I started with this unit. I had it on my 1972 Chevy Nova until it started leaking around the housing o-rings. It still cooled fine, it would just lose freon over about a 2 month period. It will go on a 2.8 car...

With all of the different top-end swaps and bottom-end builds out there, I was talking to Ben at WOT-Tech about the Diamond pistons and how different setups would affect the compression ratios (CR) of the pistons he was offering. I wanted to pass this piston information on to the users so that they could then determine what their final CR would be with any setup. Due to marginal sales, WOT-Tech has decided to no longer list or stock specific CR pistons anymore. What does this mean to everyone? It means you can tailor the pistons to suit your specific application, no matter what components you are using. ...

I searched the forum for any postings on this subject and drew a blank. Although this fix is related to any F-Body, I wanted to share it as a possible solution for anyone replacing their dried, crusty or shattered stock dashboard cover with a durable new cover and one that includes an inexpensive way to solve the lack of vent covers that most of these covers present with. Here is what you will need to do the job correctly and fast, too....: To avoid "a thousand words" that follow... here are th...