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featured:


IMPORTANT SERVICE BULLETIN:
ScienceofSpeed recommends replacing crankshaft pulley on early NSXes.
Click for more details.

  new products - NSX




new - gauge mounting plate


new - factory oil pressure sensor upgrade


new - LCD Display & Mount


updated - navigation pod


updated -
lost motion assys


new - ScienceofSpeed
Twin Turbo System



new - Clutch Alignment Tool


new - coolant expansion tank


new - Power Enterprises
Timing Belt



new - front side
marker lamps



new - ScienceofSpeed
Sport Clutch


osgikenLSD_800.jpg (81882 bytes)
new - OS Giken 4.62:1
SuperLock LSD


hosekit_800.jpg (106979 bytes)
new - reinforced silicone
coolant hose kit



new colors - NSX floor mats

koyorad_800.jpg (356148 bytes)
new - Koyo
Aluminum Radiator



new - targa shock
tower brace



new - oil feed &
pressure adaptor

 



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NSX > ENPP > NSX Intake & Exhaust Valves


billet steel
main caps

 

ScienceofSpeed Billet Steel Main Caps

 

 
For high horsepower applications (typically 600+ crankshaft horsepower) ScienceofSpeed offers billet main caps to replace the factory cast iron caps.

Machined tool steel increases tensile strength from 30,000 PSI (factory cast iron) to 90,000 PSI (machined tool steel) and decreases material brittleness to reduce fracturing from stress concentration (namely main bearing oiling hole). Hardened & black oxide finished.

Sold as a set of four. Main bore is left .025" undersized. Block and caps must be line bored to final finished size. We recommend use of the ARP Main Stud kit, which should be installed when the block is bored.
 

cracked factory main cap (photo courtesy of Driving Ambition)

specs

fitment:
NSX, all years
 

gallery

maincaps_800.jpg (99151 bytes)
maincaps2_800.jpg (96440 bytes)
 
ScienceofSpeed Billet Main Caps - NSX, all years
[enpp-1471]  $510.00