Tuning cylinder heads Porsche 356 41/35mm in exchange, spark plugs threads are milled out and welded.
To repair or prevent future cracks.
This is the great possibility to machine them for long thread spark plugs without any additional costs.
Ports corrected by hand milling.
Delivery with larger 41/35mm and lighter 8mm tuning valves, springs and lighter spring retainers.
This heads are to use only with 86mm tuning piston and cylinders!
With new special valve guides, new bigger valve seats, heads on both sides resurfaced.
Set for one engine = 2 cylinder heads for exchange.
Including new springs, heads are ready to fit (must be cleaned before!!!!).
If we need oversize guides for your delivered heads, additional costs possible.
