FI cylinder head question
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abl1111
- Posts: 57
- Joined: Mon Jun 14, 2004 4:46 pm
FI cylinder head question
Does a dual port FI, 1600 type 1 engine have, or had, sodium filled exhaust pistons ?
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BAJA-IT
- Posts: 2046
- Joined: Tue Oct 07, 2008 5:02 pm
Re: FI cylinder head question
exhaust valves?
BRAT Motorsports #936
Bolt Center: Salt Lake City, Ut
ACE: Air Cooled Engineering, now Black Line Racing
Bolt Center: Salt Lake City, Ut
ACE: Air Cooled Engineering, now Black Line Racing
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abl1111
- Posts: 57
- Joined: Mon Jun 14, 2004 4:46 pm
Re: FI cylinder head question
Sorry yes. I'm fried.
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Marc
- Moderator
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Re: FI cylinder head question
L-Jet FI heads use exhaust valves with 9mm stems and 30mm heads P/N 043 109 611A. Some are sodium-filled, some are not.
The Type III D-Jet FI heads used the same 8mm/32mm exhaust valves as carbureted 15/1600 Type I/II/III, P/N 113 109 612A. No sodium option.
There are also 9mm stem versions of the 32mm valves used in 1300DP and 15/1600 SP&DP heads, sold under 043 109 612.
The sodium-filled versions cost more as a rule but in the absence of accurate labeling I know of no reliable non-destructive way to know for sure. I once had a document that gave the Ate or TRW part numbers marked on each valve but that was many years ago.
The Type III D-Jet FI heads used the same 8mm/32mm exhaust valves as carbureted 15/1600 Type I/II/III, P/N 113 109 612A. No sodium option.
There are also 9mm stem versions of the 32mm valves used in 1300DP and 15/1600 SP&DP heads, sold under 043 109 612.
The sodium-filled versions cost more as a rule but in the absence of accurate labeling I know of no reliable non-destructive way to know for sure. I once had a document that gave the Ate or TRW part numbers marked on each valve but that was many years ago.
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abl1111
- Posts: 57
- Joined: Mon Jun 14, 2004 4:46 pm
Re: FI cylinder head question
Thank you for the clarification...