Mazworx SR20VE Stage 0.5 Cylinder Head Service Customer-supplied camshafts / No
Mazworx SR20VE Stage 0.5 Cylinder Head Service
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Shipping details
In-stock orders are processed within 48 hours; transit time is additional.
International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.
Read the shipping policyReturns
Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.
Read the full return policyReturn details & how to start
Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.
Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.
Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.
Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.
After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.
Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.
For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.
Specifications
Product details shared across all variants.
- Category
- Car Repair & Maintenance
- Shipping dimensions (L × W × H)
This service uses customer-provided engine components. A replacement core is not included.
Provide virgin SR20VE cylinder head. Confirm compatibility and condition before ordering.
The customer-supplied camshaft option requires compatible cams for assembly and valve setup.
Service work and components
- Complete disassembly of the cylinder head
- Hot tank cleaning for degreasing and debris removal
- Removal, drilling, tapping, and replacement of oil port plugs specific to the SR head
- Removal and replacement of threaded freeze plugs (ex 16mm standard) tailored for the SR20VE head
- Valve guide removal, reinstallation, and precise reaming
- Replacement of intake valve seats
- Multi-angle valve job
- Valve lash setting with valve tip adjustments
- Head resurfacing to meet OEM specifications
- Final assembly of the cylinder head
- Supertech valve stem seals
- Supertech titanium retainers
- Supertech dual valve springs rated at 83 lbs, optimized for the SR20VE
- Supertech bronze valve guides
- Mazworx threaded and O-ringed freeze plug kit designed specifically for the SR20VE head
- Standard-size Supertech valves; the selected shimless option supplies Mazworx shimless valves
Selected options define the supplied work and component upgrades. Unselected extras are not included.
Confirm delivery arrangements before sending parts. Work starts only after the individual intake is approved.
Additional work and replacement parts need approval. Core credit requests require individual approval. No automatic core credit is included.
Photos show manufacturer work examples. The service uses customer-provided cores. Selected options and listed components define the supplied work.
The charts show 2017 flow tests with standard-size Supertech valves and an 87 mm bore and chamber. They describe those tested heads.
