JE Pistons Sbf 4.030" Pistons -5Cc Flat 4.000" St 6.250" Rod 1.250" Ch 188704
(Prior to Dispatch)
The industry standard forrock solid durability in aHeavy Duty Flat Top pistonset! Designed with thick toplands for nitrous use. Willaccommodate oversized valvesand long duration, tight lobeseparation cams. PrecisionCNC machined ring groovesaccept 1/16, 1/16, 3/16rings. Pin upgraderecommended above 700hp.Recommended ring set containslow tension oil ring, forstandard tension change ringring prefix to J100F8.Hardened Nitrous Series (NHS)rings also available, changering prefix to J820F8.Referenced block heights havebeen adjusted to reflect zerodeck clearance.
Includes:
- Pin #927-2750-15-51S(130g)
- Double Spirolocks #927-042-CS
- Contact reduction grooves
Specifications:
- Part #: J188704
- CID: 408
- Bore:4.030
- Stroke: 4.000
- Rod Length: 6.250
- Block Height: 9.500
- Compression Height:1.250
- CompressionRatio with 56cc chambervolume: 12.9
- Compression Ratio with 60ccchamber volume: 12.3
- Compression Ratio with 64ccchamber volume: 11.7
- Dome Volume: -5cc
- Gram Weight: 438
- Footnote: .927 Pin Diameter
- Oversize: .030
- Recommended Ring Set(Check Proseal listing todetermine oil ring tension):J10008-4030-5
With over 60 years ofexperience, JE Pistons is theleader in high performanceforged pistons. We've built areputation that thecompetition can only follow.JE has a history ofmanufacturing the highestquality pistons andcomponents that professionalengine builders, race teams,and high performanceenthusiasts trust and relyon.
The top enginebuilders in NASCAR, ALMS,NHRA, AMA Supercross andothers choose JE Pistons overany other brand. For over 60years, JE's position at theforefront of performancepiston manufacturing has beena result ofresearch and development ofunique materials, pistondesigns and technologies.Utilising State-Of-The-ArtCNC machines formanufacturing along withpurpose-designed forgings, JEis able to maintain exactingspecifications on each andevery piston and holdtolerances to millionths ofan inch. Also available fromJE is industry-leadingprocesses like Ultra Crown, aDigital Three Dimensionalpiston crown machiningprocess and Finite ElementAnalysis (FEA). FEA is acomputer process wherebystress and fatigue are testedon a computer model before itgoes into production. JE isthe only performance pistonmanufacturer to earn theQS-9000 quality standardwhich confirms that JEprovides customers thehighest standards in qualitycontrol. In addition, we alsohave State-Of-The-Artinspection equipment andtesting equipment whichenables us to constantlybring you, the customer, thevery latest in piston designconfigurations.