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John Coffey

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Everything posted by John Coffey

  1. John Coffey
    1974 260Z 2+2 MT R200 3.36 - for sure. 1975-76 280z 2+2 MT R200 3.36 - I think so.
  2. John Coffey
    OK. That's great news.
  3. John Coffey
    Take it to a machinist and have him cut it .0039" (.1mm). That should clean it up well and not have an appreciable effect on cam timing.
  4. John Coffey
    Why are you blasting the strut with the shock installed? Ideally you would remove the shock, clean out inside the strut tube (where there is likely to be rust) and then blast inside the tube.
  5. John Coffey
    Nice to see how they did the fuel tank mounting.
  6. John Coffey
    The fuel cell is not separated from the passenger compartment by and bulkhead and the battery, with an unprotected positive terminal, is right next to the fuel cell. At least its a good SFI/FIA approved cell with a Kevlar bladder. If the lines don't break or leak in a hard rear impact there shouldn't be a fire, at least right away.
  7. John Coffey
    Its all Unicrons and Rainbows... Unicorn & Rainbow Happiness | Cornify
  8. John Coffey
    You would keep all the old parts and take them with you to the Nissan dealer to purchase replacements that were mostly in stock. Just about the time these parts went NLA the Internet came of age.
  9. John Coffey
    They already know. And its about 100,000 right now and of that number less then .5% might actually pay money. Remember, Edelbrock bought JG Engine Dynamics about 10 years ago and JG was/is one of the biggest Honda tuners out there. Javier also raced Datsun 240Zs for years and built some of the fastest road racing L6 engines available in the 1990s. Javier says that the Honda aftermarket is at least 30 times the size of the Datsun aftermarket. Again, the Z market is teeny tiny and its financially silly to invest in the tooling required to make a custom intake manifold for the L6 when you'll probably only sell 10. Look on HybridZ and figure out the total sales for the two guys that made custom intake manifolds for the L6. Maybe 18 total over 10 years.
  10. John Coffey
    Parts for the 12A engine are very hard to come by now - one of the reasons SpecRX7 is dying. The 13B in the 1984 SE is also an odd duck compared to the 13B in the FC RX7s. There is even less of an aftermarket for the FB RX7 then for the S30s.
  11. John Coffey
    If you get a good heat insulating header coating (not the Jet Hot Sterling that MSA sells) you don't need to wrap it. Jet Hot 2000 is much better and I think Swain White Lightening is the best.
  12. John Coffey
    Its just not listed. If you call, he has a couple different options. I know two people running them in their ITS 280Zs.
  13. John Coffey
    Almost all? Maybe 5% max. I've had probably a dozen 2.4L engines and not one has ever had the spray bar fail and most were used on a race track.
  14. John Coffey
    http://www.jimwolftechnology.com/customer_results.asp
  15. John Coffey
    The recommended wheel width numbers that Tire Rack (and all tire manufacturers publish) are based on a DOT formula for safety. For the best performance from your tire the rim width should be equal to or 1/2" wider then actual tread width (per Jeff Speer at Hoosier). Also, the tire size numbers published by the tire manufacturers have little to do with tread width. A 225 tire does not necessarily have a 225mm wide tread. For example: A Hoosier R6 225 DOT R tire tread width is about 30mm wider then a Kumho XS 225 street tire tread width.
  16. John Coffey
    Since most of the Z related content is already free here on the Internet, there's no paying model that would support an Internet magazine. I cancelled my subscriptions to all car magazines way back in 2008. I got tires of the reprinted press releases from various car manufacturers.
  17. John Coffey
    That washer is in about 1/2 of the rear hubs I tear down. I throw them away and go with the original installation.
  18. John Coffey
    The Bilstien Motorsports 36mm shocks will come with 5 different tarmac valvings and 2 different gravel valvings. That will cover most of what people will run on a S30. Revalving is $60 per unit (estimated) with a two week turn around.
  19. John Coffey
    I was mistaken with my post about the digressive valving on the P30s. That's the 36mm shocks.
  20. John Coffey
    The P30-0032 Bilsteins are available, the issue is getting the correct gland nut. Its really hit or miss on whether you can get the gland nuts. There are two part numbers to choose from and I just received three of one and one of the other on an order. I'll have to cut the one down with a lathe to get it to work. These shocks will work well for all street and most light duty track and autocross cars. Non-adjustable but the valving is good to 250/275 lb. in. and they are digressive. I'm still waiting for the 36mm Bilstein Motorsports shocks.
  21. John Coffey
    Off the shelf KYB GR2s or Monroe's are probably the best best for a softer ride. Rubber TC rod and CLA bushings help, tires with a taller side wall (55 or 60 series) and lower tires pressures.
  22. John Coffey
    The Chevette front suspension is SLA, not coil over. The spring rate may be high but the wheel rate is very soft. The Chevette also has a 55F/45R weight distribution. The 800lb. number above is just an example, not a real number. Springs rate does not contribute to ride harshness. My racing 240Z with Penske triple shocks and 375/350 springs was more supple in ride them my street 240Z using Tokico HP shocks and the Eibach progressive springs. Ride harshness is more a function of shock compression damping, suspension longitudinal compliance, bushing material and compliance, tire construction, and tire pressures.
  23. John Coffey
  24. John Coffey
    Same rate as the Tokico 5022R (280Z rear springs).
  25. John Coffey
    The Chevette springs work well and give more rate then the stock springs. I've installed them (cut) on my own and customer cars. Check over on HybridZ. EDIT: I'll post the info here: Rate: 197 lb. in. Stack height: 9.75" @ 800lb. corner weight Free height: 14" ID: 3.5" OD: 4" You will need to cut them to get back to a stock ride height.
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