Image 1 of 1
Image 1 of 1
Image 1 of 1
Image 1 of 1
!!!Built to Order!!!
Each S54 head is assembled only after purchase, with options for porting and valve train configuration. Typical lead times apply.
S54s are arguably one of the most common engines you will find on track, and being a go-to engine for track use, though eventually need to be thoroughly gone through. It’s rare to find an S54 head with a crack, unlike the earlier S50/S52 engines, so that’s not as much of a concern.
On S54 heads we highly recommend replacing the exhaust valves, as they are arguably the most wear-prone items besides the guides and potentially the rockers.
Each S54 head we build is fully disassembled, cleaned, and inspected before reassembly. Components such as cam caps, rockers, rocker shafts, rocker retainer clips, valve springs, valves, and spring seat retainers are removed and washed in our high-temperature jet wash.
Inspection & Machining
All components are visually inspected for wear or damage
Valve spring pressures are sampled to ensure a 5–8% consistency range
Guides are checked for clearance; replacements are determined based on guide condition
Valves are individually inspected for wear
Seats are cut with 4 angles on both intake and exhaust
Head surface is machined minimally (typically .002”–.005")
Reassembly & Testing
The head is reassembled with the buyer’s choice of valve train. If wear permits, old valve train may be reused. Final assembly is vacuum-tested to confirm proper valve-to-seat sealing. New Elring valve stem seals are provided with final assembly
!!!Built to Order!!!
Each S54 head is assembled only after purchase, with options for porting and valve train configuration. Typical lead times apply.
S54s are arguably one of the most common engines you will find on track, and being a go-to engine for track use, though eventually need to be thoroughly gone through. It’s rare to find an S54 head with a crack, unlike the earlier S50/S52 engines, so that’s not as much of a concern.
On S54 heads we highly recommend replacing the exhaust valves, as they are arguably the most wear-prone items besides the guides and potentially the rockers.
Each S54 head we build is fully disassembled, cleaned, and inspected before reassembly. Components such as cam caps, rockers, rocker shafts, rocker retainer clips, valve springs, valves, and spring seat retainers are removed and washed in our high-temperature jet wash.
Inspection & Machining
All components are visually inspected for wear or damage
Valve spring pressures are sampled to ensure a 5–8% consistency range
Guides are checked for clearance; replacements are determined based on guide condition
Valves are individually inspected for wear
Seats are cut with 4 angles on both intake and exhaust
Head surface is machined minimally (typically .002”–.005")
Reassembly & Testing
The head is reassembled with the buyer’s choice of valve train. If wear permits, old valve train may be reused. Final assembly is vacuum-tested to confirm proper valve-to-seat sealing. New Elring valve stem seals are provided with final assembly