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  1. M

    Repair Part/Availability for ZR1

    ZR1 failure modes/repair costs Johnny, Thanks for the very informative posting. Can others contribute to this small failure database? What are some recent rebuild cost experiences members have encountered in doing a stock rebuild (for example, after bending a valve due to over-revving or due...
  2. M

    Battery Tender vs Charger ?

    These battery tenders and battery minder devices actually monitor the output voltage of your battery, so they seem to have solved the problem of overcharging and boiling the fluids out of your batteries. I have used a couple of them for the last two years and have carefully monitored the...
  3. M

    Battery Tender vs Charger ?

    Battery Tender Plus supplier These guys look to be a pretty good source for Battery Tender Plus, Battery Minders, and Optima batteries. I have not tried them myself, but the prices look pretty good and the web site has lots of information on it. See: http://www.batterymart.com/
  4. M

    Top speed - what has your Callaway seen?

    I have four out of six required items: 5 point seat belts horsepower rollbar suspension/handling Missing are the most important two: Guts Money We shall see. Ely is located about 320 miles straight east of the car's home base in Carson City. Both towns are on Route 50.
  5. M

    Who,s The Lucky one buying this ?

    Where (to which state) is this beauty going? I was tracking it when it lived in Colorado last winter/spring. The original owner and I could not come to mutually agreeable terms at the time.
  6. M

    Congrats to Chris!

    Congrats to Chris? It is Natasha who did most of the heavy work here. So congratulations to both Natasha and Chris. With the larger family, does this mean you will be buying one of those Callaway Suburbans or Callaway Caprice cars soon?
  7. M

    My car is going to ebay.

    Surf, Sorry to hear about this. Make sure to post your dyno graphs on the ebay ad. I think that will certainly help your interest level and sales price. It will also inform people as the the really high and wide band torque levels possible from a turbocharged engine. Good luck with the sale...
  8. M

    Top speed - what has your Callaway seen?

    138 mph in a CR1. But I am a new owner and promise to do better in Nevada. I certainly got to 138 pretty quickly, too. I thought I was doing about 105-110 until I looked down...
  9. M

    Magnetic Drain Plug

    I couldn't find any sources for magnetic drain plugs for the ZR1, so I bought a standard drain plug from the dealer ($11plus !!!). I was planning to make my own magnetic plug from some high strength disk drive magnets and epoxy. However, I just located a source and ordered a magnetic plug...
  10. M

    Compression ratio

    I would leave the CR alone. Even at the high UK prices, gas is still much cheaper than engine components... Some high performance turbo cars like the Ruf Porsche have even lower compression ratios to allow for more boosted power. I think some of the Ruf units have engine compression ratios in...
  11. M

    ***Callaway ZR-1 Overheating Hi Temp***

    I will see if I can get off my butt tomorrow and take some comparable measurements with the same pyrometer on a fairly stock 91 L98 motor with stock exhaust manifolds and cats on it. Measurements on the L98 with JetHot coated headers will take me about 10 days or so, as other projects are in...
  12. M

    ***Callaway ZR-1 Overheating Hi Temp***

    Digital Pyrometer Readings Here are some preliminary digital pyrometer readings from the DRM 368 c.i. motor in my 92 CR1. This car has in/out JetHot coated headers on it. The headers are made by Watson and connect to a dual 3 inch exhaust system with Borla XR1 mufflers on it. It does have...
  13. M

    ***Callaway ZR-1 Overheating Hi Temp***

    Ron, Thanks for the informative post and keep us informed on you SPAL fan findings. I found my digital pyrometer and will take some measurements in the next 4-5 days of my 91 L98 stock motor, a 90 L98 motor with in/out coated headers, and my 92 CR1 with in/out coated headers. Subjectively...
  14. M

    ***Callaway ZR-1 Overheating Hi Temp***

    Thanks for your first hand report on header wrap. That's what we need instead of more science and speculation. Do you remember what brand of header covering material you used? Was it the wrap type or the clamp around the tubes type of material? How long did your headers last with this before...
  15. M

    L98 Superchargers?

    Procharger 600 Picture Here is a picture of a very nice Procharger 600B installation on an 88 Corvette. Obviously the air intake location is not optimum, as the engine will be inducting air that has just been heated by the left exhaust manifold. This hot air intake problem could probably be...
  16. M

    ***Callaway ZR-1 Overheating Hi Temp***

    Header Wrapping Wrapping the headers will definitely improve performance (faster exhaust gas flow) and reduce heat in the engine compartment. See this url: http://thermotec.com/technology/how/how.html On the same web site, Themotec says that header pipe heat will be reduced from approximately...
  17. M

    ***Callaway ZR-1 Overheating Hi Temp***

    My Watson headers are Jet Hot coated inside and out. I am not sure about the Random Tech Cats that are attached to them. The headers are the most important part, since they are completely in the engine compartment. My car still has the center plenum gasket and does not overheat. I would...
  18. M

    ***Callaway ZR-1 Overheating Hi Temp***

    Couple minor corrections to my posting I have a couple of minor corrections to my earlier posting. First, the radiator guys that I mentioned in Canal Fulton Ohio are actually KryderRacing, not Krieger. Looking at the summer 2000 receipts from KryderRacing, they indicate that the radiator is a...
  19. M

    Objects In Mirror Will Soon Dissapear

    Nice Update Who's Your Daddy?
  20. M

    Trailer/Hauler (Callaway) Anyone have experience w/ these?

    My wife hates you Chris, You are a bad man. My wife hates you. How many cars will that white baby hold? It looks like it has enough room for a beer fridge, one or two cars, a cot, and an internal dog house. That would have been a good San Diego fire evac vehicle for me a couple of weeks...
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