Page 303 - 2019-2020 Racecar Engineering Circle Track Parts and Accessories Catalog

Titanium Valves Super 7° Titanium
/LJKW VWURQJ DQG UHOLDEOH 'HO :HVW YDOYHV DUH “Non-Shoulder” Valve Locks
PDQXIDFWXUHG XVLQJ PLOLWDU\ VSHF WLWDQLXP IRU ZHLJKW /LJKWZHLJKW QRQ VKRXOGHU W\SH ƒ WLWDQL-
VDYLQJV RI DSSUR[LPDWHO\ RYHU VWHHO DOOR\V 5DGLXV XP ORFNV DUH DPRQJ WKH ¿QHVW DQG PRVW
VW\OH ORFN JURRYHV UHGXFH YDOYH VWHP DQG WLS VWUHVV UHOLDEOH &1& PDFKLQHG ORFNV ZLOO VDYH JUDPV DQG
DQG UHTXLUH UDGLXV VW\OH YDOYH ORFNV 6ROG LQ VHWV RI DVVXUH D VXSHULRU YDOYH VWHP ¿W 6ROG LQ VHWV RI SDLU
eight.
Stem Installed
Part No. Diameter Height Style
DEL689-C-16 11/32" -.050" Radius
11/32" Titanium Valves DEL690-C-16 11/32" Standard Radius
Head Overall DEL691-C-16 11/32" +.050" Radius
Part No. Description Type Dia. Length DEL693-C-16 5/16" Standard Radius
DELEV1600-2T-CRST-8 +.200" Long Exhaust 1.600" 5.140"
DELEV1625-6T25-CRST-8 +.600" Long Exhaust 1.625" 5.540"
DELEV1625-6T-CRST-8 +.600" Long/25° Seat Exhaust 1.625" 5.540" Super 7° Standard And “LTW”
DELEV1625-7T-CRST-8 +.700" Long Exhaust 1.625" 5.640" Titanium Retainers
DELIV2080-1T-CRST-8 +.100" Long Intake 2.080" 5.040"
DELIV2080-2T-CRST-8 +.200" Long Intake 2.080" 5.140" 5HWDLQHUV DUH &1& PD-
DELIV2100-2T-CRST-8 +.200" Long Intake 2.100" 5.140" FKLQHG IURP ELOOHW WLWDQLXP
DELIV2180-6T-CRST-8 +.600" Long Intake 2.180" 5.540" heat-treated for maximum
DELIV2080-1T-CRST-8 +.100" Long Intake 2.080" 5.040" VWUHQJWK DQG RIIHUHG LQ
VWDQGDUG RU ³/7:´ OLJKWZHLJKW GHVLJQV ³/7:´
UHWDLQHUV KDYH D FRPSRXQG UDGLXV FUHDWHG E\ UHPRYLQJ PDWHULDO
Super 7° Titanium “Shoulder” Valve Locks IURP WKH LQQHU ERG\ WR PLQLPL]H ZHLJKW ZLWKRXW FRPSURPLVLQJ
/LJKWZHLJKW ORFNV DUH PDFKLQHG IURP KLJK TXDOLW\ WLWDQLXP 6ROG VWUHQJWK 6ROG LQ VHWV RI
LQ VHWV RI SDLUV Dimensions
Valve
Part No. Stem Diameter Installed Height Style Part No. Spring A B C D
DEL790-C-16 11/32" Standard Radius “LTW” Retainers
DEL791-C-16 11/32" +.050" Radius DEL510-LTW-16 Double 1.450" 1.120" .730" —
DEL792-C-16 5/16" -.050" Radius DEL515-LTW-16 Double 1.450" 1.140" .745" —
DEL793-C-16 5/16" Standard Radius Standard Retainers
DEL794-C-16 5/16" +.050" Radius DEL515-16 Double 1.500" 1.140" .745" —
DEL530B-16 Double 1.495" 1.155" .835" —
DEL550B-16 Double 1.500" 1.180" .775" —

Detroit Truetrac
CTR
7UXHWUDF¶V SURYHQ KHOLFDO JHDU GHVLJQ
&75 &LUFOH 7UDFN 5DFLQJ GLIIHUHQWLDOV DUH
HQJLQHHUHG H[FOXVLYHO\ IRU OHIW WXUQ UDFLQJ HOLPLQDWHV IULFWLRQ SODWHV FRQHV DQG
VSULQJV IRU PDLQWHQDQFH IUHH WUDFWLRQ 3RZHU
&75 SURYLGHV WUDFWLRQ WR WKH OHIW UHDU WUDQVIHU LV VR VPRRWK LW OLWHUDOO\ JRHV XQQRWLFHG
wheel and differential action to the right rear E\ WKH GULYHU 3URYHQ GHVLJQ ORZ FRVW DQG HIIHFWLYH SHUIRUPDQFH
ZKHHO ,GHDOO\ VXLWHG IRU ODWH PRGHOV GLUW PRGL¿HGV make the Truetrac limited slip differential the ideal choice for a
RU VSULQWV WKH &75 DOORZV WKH GULYHU WR VWD\ RQ WKH JDV ZLGH YDULHW\ RI YHKLFOHV
ORQJHU HQWHU WKH WXUQV GHHSHU DQG JHW EDFN RQ WKH JDV VRRQHU
for higher exit speeds. Axle Axle
Part No. Description Dia. Spline Ratios
Axle Axle DET911A319 GM 7.5", 10-Bolt, 1975-89 1.16" 26 3.23-Up
Part No. Description Dia. Spline Ratios DET911A415 GM 7.5", 10-Bolt, 1975-89 1.16" 26 3.08-Down
DETR18703A CTR, Ford 9" 1.32" 31 All Exc. 2.72 DET912A317 GM 7.5"/7.6", 10-Bolt, 1988-05 1.20" 28 3.23-Up
DET912A616 Ford 8", Up To 1978 — 28 3.25-Up
DET912A587 Ford 9", 1957-79 1.20" 28 All
Eaton Posi DET913A481 GM 8.5", 10-Bolt, 1988-96 1.32" 30 2.73-5.13
$XWRPDWLF OLPLWHG VOLS XQLWV ZLWK FDUERQ IULF- DET913A586 Ford 9", 1957-79 1.32" 31 All Exc. 2.72
WLRQ FOXWFKHV DQG IRUJHG JHDUV FRQVLVWHQWO\
DQG UHOLDEO\ GHOLYHU HTXDO SRZHU WR ERWK ZKHHOV Detroit Locker DET187SL17B
8QLWV DUH UHEXLOGDEOH 7KH 'HWURLW /RFNHU HQJLQHHUHG IRU
Axle )RUG UHDUV ZLWK VSOLQH D[OHV PD[LPL]HV
Part No. Description Axle Dia. Spline Ratios WUDFWLRQ E\ GHOLYHULQJ RI WKH DYDLODEOH SRZHU
DET19557-010 GM 8.5", 10-Bolt Car, 1971-89 1.20" 28 2.73-Up WR ERWK GULYH ZKHHOV (QJLQHHUHG WR NHHS ERWK ZKHHOV LQ
DET19559-010 GM 8.5", 10-Bolt Car, 1988-96 1.32" 30 2.73-Up D FRQVWDQW GULYH PRGH GLIIHUHQWLDO KDV WKH DELOLW\ WR DXWR-
DET19603-010 GM 8.2", 10-Bolt Car, 1964-72 — 28 3.08-Up
DET19663-010 GM 7.5", 10-Bolt, 1975-89 1.16" 26 3.23-Up PDWLFDOO\ DOORZ ZKHHO VSHHG GLIIHUHQWLDWLRQ ZKHQ UHTXLUHG
NOTE: Compatible with all ring and pinion ratios except 2.72.

2019-20 CIRCLE TRACK PARTS AND ACCESSORIES 299