Guys,
I am in the starting process of building an ITS car from a '91 RX-7. I have never offically "road raced" in door to door competition but I have been running SCCA Solo I for two years now and have been Solo II competing for around 8 years.

The car I am starting with has a low compression motor (had 130k + miles on it) that I picked up for nearly nothing. I have been pricing a rebuilt motor for this car. I have been quoted everything from $1800 for a basic rebuild to around $5000 for an "ITS Race" motor.
Is the extra $3200 (difference between cheap and race motor) just going to ceramic apex seals and new side housings?
What else are the pro engine builders doing to justify the price difference? Ceramic seals and new rotor housings can be purchased for around $2800. Is the rest put towards balancing and extra time spent checking the clearance of all the parts?



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B. Carmon Colvin
ThePartsTrader.com
'86 Mazda RX-7