so the 1998-2004 c5 vette master fits the dual can 7'' booster as its gm, plus is 1'' bore when fitted underfloor - cut floor so plastic seam touches the underside of floor pan, bottle is in car - low fluid switch audible/visual warning, threaded cap for pressure bleeding - no need to bench bleed the new master? https://www.corvetteforum.com/forum...2473014-newr-style-master-cylinder-in-c3.html so the port to the left is an m12 x 1mm rear and the port to the right is m12 x 1.5mm front (servo/booster side)-underfloor The thread forms being m12 BUT different guarantees the front/rear circuits cannot be switched!! - they were the same in 1997 one year only m12x1 - confusion... The front brakes attach to the rear port and the rear to the front. This is backwards from the C3, but the lines have to be tweeked to fit anyway. The front brake line uses a 12x1.5mm ISO bubble flare on a 1/4" line. The rear uses a 12x1mm bubble flare on a 1/4" line. The only fittings I could find were for 1/4" line so I have 1/4" for both front and rear then an adapter to drop it down to the 3/16" on one of them to match up to the stock lines. And both feed to the stock distribution block. The front brake line uses a 12x1.5mm ISO bubble flare on a 1/4" line -(booster side) The rear uses a 12x1mm ISO bubble flare so in brief, what brake line tails do I need? The front brake line uses a 12x1.5mm ISO bubble flare on 1/4" line to 1/2'' 20 sae double flare The rear m12 x 1mm ISO bubble flare in 3/16 line to 7/16 - 24 sae double flare https://www.ebay.co.uk/itm/10-Pack-...920906?hash=item4d8e7b34ca:g:Gw8AAOSwhH1cP~Q6 groovy, so the front line 12 x 1.5 ISO bubble tube nut is ONLY available for 1/4'' line, BUT the m12 x 1 rear is available in 3/16 so to not confuse you still further, make the front line to combination valve in 1/4 the rear in 3/16 groovy so what are the threads in the combo valve https://www.bing.com/videos/search?...F01521888C4074AA5BADF01521888C4074A&FORM=VIRE https://www.bing.com/videos/search?q=+combination+brake+valve+metric&&view=detail&mid=2FEDB4C6273648CFDCA42FEDB4C6273648CFDCA4&&FORM=VRDGAR&ru=/videos/search?q=%20combination%20brake%20valve%20metric&qs=n&sp=-1&pq=combination%20brake%20valve%20metric&sc=0-30&sk=&cvid=6E0E7D20F7FA4691A33AC00064C8BF3F&FORM=VDVVXX when fitting under, the orientation switches, just remember this mc front lines servo side - opposite to c3, damn so...… front brake line from brake master to
Yes Chris, until this morning, I didn't know what the threads were in this master this is why I am so confused 98-02 LS1 F-body - (1) M12x1.0 & (1) M11x1.5 ISO bubble flare 1997 C5 Corvette - (2) M12x1.0 ISO bubble flare 98-04 C5 Corvette - (1) M12x1.0 & (1) M12x1.5 ISO bubble flare 05-Present C6 Corvette - (2) M12x1.0 SAE metric inverted flare I must have the 98-04 I knew something changed in 97, I thought they went from imperial to metric. so I have answered my own question.. why don't you use a c5 vette brake master you can't get the m12 1.5 ISO bubble flare tube nuts, well you can in 1/4 questions.. where do you buy the plastic shuttle stop for the combination valve when bleeding, do yoou need it for a fresh install will it move when bleeding? is this something to do with bleeding the rear circuit first? you need a longer clevis / heim doofer , this set up with an iron master is too long in a 37 as the master hits the cross member, this master is much shorter. Can you tell if the combination valve shuttle has moved simply by putting 12v to it with a tester at the wire. Is there anything to the double inverted flare sae in any of the parts that warrant using bigger lines because maybe the inverted cone in the mc combo valve or and connections is taller/wider are you supposed to go 1/4'' line from mc to combo valve both sides? deffo 3/16 inverted flare from combo to front doesn't say on that diagram IF its best to run 1/4 to the rear splitter. doesn't say 1/4'' line in the iso bubbles, at the brake master - IF the 12 x 1.5 tube nut is only available in 1/4'' line surely that would indicate that the other port warrants 1/4'' line as the bore and taper at joint is the same. I.E. the physical shape of the bubble differs if made 1/4 or 3/16 more http://doczz.net/doc/3662746/bolt-on-option---chassis-engineering-inc page 84 note, not 1'' bore but 15/16 - gm alloy brake master, must be a s10 unit. 15/16 is 24mm rock auto states a s10 pre twin piston , single caliper wants a 24mm or 15/16 brake master. so - even your corvette one at 1'' is too big =buy the s10 24mm one and swap the bottles? so, IS he/her saying use the 1'' brake master if using the pre 1977 bigger brake caliper what are the bore sizes pre 77 and later metric. they do make a metric caliper with the bigger bore caliper? far too confusing for a mere mortal.
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