Nate SERE Posted July 23, 2014 Share Posted July 23, 2014 (edited) Does anyone know where I can get the specs on a BSR 280z racing engine? Did they all use the Preston 5-speed Dog Ring Tranny? Did they use triple webers? I am mostly interested in the 1978 280z models. I have searched for the last 3 hours and can't find any information. I have watched a bunch of videos and read that the race motor was listed at 240+ hp, but that seems pretty low based on what I have seen. Thanks for your help. Edited July 23, 2014 by Nate SERE Quote Link to comment Share on other sites More sharing options...
johnc Posted July 23, 2014 Share Posted July 23, 2014 There are no special tricks for a period build. They also had to build to a rule set. Except for carbuation, I think current SCCA HP engine builds are close to what was done in 1975. Are you building a replica? If not, using more modern thinking can get you more power for less money. You also have to build for current unleaded and oxygenated fuels if you are building a street engine Quote Link to comment Share on other sites More sharing options...
Nate SERE Posted July 23, 2014 Author Share Posted July 23, 2014 Yes I'm looking at building a replica. Not a full on race car, but similar motor and tranny, paint scheme, and exhaust. I have 15x10.5 wheels that I'm going to use. Probably add a racing seat of some sort. Quote Link to comment Share on other sites More sharing options...
johnc Posted July 23, 2014 Share Posted July 23, 2014 Ron Carter is the man to talk to. Quote Link to comment Share on other sites More sharing options...
Nate SERE Posted July 23, 2014 Author Share Posted July 23, 2014 Contact information? Quote Link to comment Share on other sites More sharing options...
Nate SERE Posted July 23, 2014 Author Share Posted July 23, 2014 Found his website and sent him an email. Quote Link to comment Share on other sites More sharing options...
Tony D Posted July 25, 2014 Share Posted July 25, 2014 Ron Carter is the man to talk to. ^^^^^^Ron is The Man!^^^^^^ Quote Link to comment Share on other sites More sharing options...
Nate SERE Posted July 25, 2014 Author Share Posted July 25, 2014 Yea he has been a lot of helping with helping my ID my race motor Quote Link to comment Share on other sites More sharing options...
Davehuckleberry Posted December 16, 2014 Share Posted December 16, 2014 Hi, I used to have a 1974 Datsun 260z that i raced in C Production in 1975 & 1976. You had asked whether they used triple Webers. Yes i did. I converted from two 2SU-type 2 barrels over to three Weber 2 barrels along with a full race cam among many other things. My 260z went from a car with some pep to a very very quick squirrelly monster!! Top speed was 165 mph. Quote Link to comment Share on other sites More sharing options...
ihavearustedz Posted December 16, 2014 Share Posted December 16, 2014 Any pictures Davehuckleberry? Would love to see any pics of the Car/build/motor ! Quote Link to comment Share on other sites More sharing options...
gnosez Posted December 16, 2014 Share Posted December 16, 2014 I have the engine spec report (325+hp) that BSR submitted to SCCA back in the day. It'll take me a few days to get back home and then scan and post them. The 1970 #33 car had Solex triples with a very machined E31 head. That head and carbs will be mounted next month on a new block containing NOS Cogsworth pistons that came with the head and carbs. The old block had a very small crack in the cylinder wall causing it to overheat when ambient temps got over 80 degrees. It made 300hp@crank and was 13.5:1 on 110 fuel. Have a meeting with JR Mitchell tomorrow to discuss gearing for the Preston 5-psd dogleg/dog ring tranny. Bob never used one nor did Paul until he drove the '79 280ZX. JR worked for Bob in the race shop as did his wife and JR was the lead on the development of the 280ZXTT. Quote Link to comment Share on other sites More sharing options...
THUNDERZ Posted November 18, 2016 Share Posted November 18, 2016 Did you ever dig up the spec sheet? Quote Link to comment Share on other sites More sharing options...
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