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356 928 |
California
Motorsports Inc. 928-855-5755 |
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PORSCHE 915 TRANSMISSION (prices and availability are subject to change
without notice) |
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TRANSMISSION SPECIFICATION ·
Porsche transmission type: 915 ·
Original equipment for: Porsche 911 72-86 ·
Description: 4 or 5 speed manual
transaxle w/non synchronized reverse and early Porsche synchromesh ·
Limited Slip Differential: 40%-80% ZF LSD optional equipment ·
Weight (approx): 123lbs ·
Oil Capacity (approx): 3L SAE 90 transmission oil ·
Speedometer: Mechanical speedo
72-75; Electric speedo 75-86 ·
Trans controls: Rod linkage ·
Clutch:
Mechanical/cable, pull clutch, 225mm single plate |
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CMS 915 TRANSMISSION REBUILDING, REPAIR AND
MODIFICATION SERVICES We offer a variety of services for your Porsche 915 transmission
and would be happy to send you a quotation for any project however large or
small! ·
Full transmission inspection ·
Full transmission overhaul ·
Ring and pinion setup ·
Differential setup ·
LSD rebuild ·
Flip ring gear for mid engine or
inverted use ·
Prepare for inverted use ·
Electric speedo
modification (cover side) ·
Bore repair bell housing and center case ·
Slave cylinder retrofit ·
Main shaft straightening ·
Dog ring replacement, gear spot welding
and honing ·
Internal spray bar oiling system ·
Custom MIG and TIG welding |
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CMS 915 BILLET BEARING RETAINING PLATE ·
Fits all Porsche 911/915 transmissions 72-86, including
’76 912E ·
Precision machined from 4130 Chromoly ·
Better supports both main and pinion shaft bearings ·
Improved design incorporates an oil groove promoting more
lubrication to the input shaft bearings ·
Substantial clearances for ease of assembly ·
Perfect fit for bearings and assembly ·
Much stronger than the original cast two piece design ·
Hardware included! $199
Additional information: ·
How to modify case and bearing race for
improved lubrication to the main shaft bearings ·
Installation instructions |
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CMS 915 BILLET DIFFERENTIAL SIDE PLATE ·
Made in house from aircraft quality
billet aluminum ·
Superior in strength as compared to all
OEM side plates ·
Uses 930 Turbo differential taper bearing ·
Oil passageway for additional
lubrication to the diff bearing ·
Perfect fit/no clearance issues ·
Adds strength and reliability to the
diff section ·
Perfect for racing and V8 applications $348 Additional information: ·
Installation
instructions |
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KAAZ 915 LIMITED SLIP DIFFERENTIALS Help put your power to the ground more effectively
and add stability with a limited slip.
This is an improvement for a street car and a must for track car. ·
12 plate
design ·
High grade
billet steel housing ·
1.5 way
asymmetrical ramps or 2 way symmetrical ramps available, allowing for 12
possible internal settings total ·
Treated steel
plates allow for smooth and quiet operation ·
Fits 75-86
915 with coarse or fine splines; retrofit for 72-74
models ·
Provision for
Euro Carrera oil pump drive gear ·
Provision for
electric speedo reluctor
ring Rebuild parts and services are also available. $1695 |
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ALBINS 915 GEARS AND RING AND PINIONS Stock gear ratios are designed for drivability and
fuel economy and not necessarily for best performance. Whether you have a stock motor or one that has been
tuned your transmissions gear ratios may not be optimum for your driving
needs. Optimizing your gears to match
your engine’s power curves can make a huge difference on the track, often
resulting in reduced lap times, and can give the sensation that there has
been a gain in power. Alternative gear
ratios can make the car more fun to drive or be more drivable. We carry a wide selection of OEM Porsche gears and
Albins gears to suit a variety of applications. Most
racing ratios are only available in Albins new condition. 915 GEAR LIST
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915 1st
gear set (weld on type; requires core OEM input
shaft; requires additional labor-not included in price) $850 w/new synchro
teeth ·
915 2nd,
3rd, 4th or 5th gear set $850 per set w/new synchro
teeth ·
915 ring and
pinions 7:31, 8:31, 8:35, 10:31 $2925 ·
OEM used
gears $ inquire CUSTOM GEAR CHARTS 72-73 915 WITH 8:31 72-73 915 WITH 10:31 75-79 915 WITH 7:31 75-79 915 WITH 10:31 |
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ALBINS 915 SYNCHRO TEETH Sometimes termed as dog ring or synchro
hub, these are the teeth that the shift sleeve/slider engages into. If you have a bad synchronizer and if you have
been grinding going into gear-you probably need to replace this part. These are a direct replacement for both OEM and
Albins gears. ·
1st gear synchro
teeth, asymmetrical, 77-86, $199 ·
2nd gear synchro
teeth, 72-86 $199 ·
3rd, 4th or 5th
gear synchro teeth, 72-86, $199 |
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CMS 915 RING GEAR SPACER This 2mm spacer ring allows for a much easier setup when
retrofitting some differentials and or ring and pinions within the 915
family. $65 |
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CMS 915 CUSTOM INTERNAL SPRAY BAR ·
Custom made beautifully out of stainless ·
Excellent reproduction of the RSR spray
bar ·
Allows for gear lube to be returned to
critical areas of the gearbox during extreme conditions (requires pump) ·
Promotes longer synchro,
bearing and gear life $595 |
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CMS EARLY 915 THROW OUT BEARING GUIDE TUBE UPDATE This update will allow for use of the late style 915
main shaft seal and o-ring on early transmissions (72-75) where the seal
installs from the inside and the guide tube is not removable. The update is also good repair for those
whom have loose, damaged or worn out guide tubes. The original is machined off and a custom steel tube
is fitted. It’s further retained from the inside of the diff case with a high
quality snap ring and sealed with the factory o-ring. We perform this modification in house and you can
send us just the bell housing or the entire transmission. If you send us just the bell housing, we charge $295
to install the upgraded guide tube. We’ll even clean and inspect the housing’s
bearing bores for you at no additional charge. |
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CMS 915 BEARING BORE REPAIR It’s not uncommon for your 915 transmission case to
have spun bearing races and misaligned bores.
This issue was most predominant in the 78-83 differential housings
pinion bearing bore. With the age and
mileage of today’s 915 original cases, some may need more than one bore
repaired. Typically “staking” or “loctiting”
the spun race won’t fix the problem. We can reliably and cost efficiently repair your
915’s bell housing or center section’s main shaft or pinion shaft bearing
bores with our custom made sleeves. We machine the original bore(s) to restore
concentricity as needed then press fit the new bushing(s) into place. With this repair you may continue to use
the original style cylindrical roller bearings. $250 per bore |
