danfrith
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| posted on 2/1/06 at 06:50 PM |
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X-Flow fueling
I am running a 1600 x-flow engine that is in decent nick - currently still on 4*.
The car should be going for its SVA in the next 3 months.
Has anyone any advice on unleaded conversion on on using additives with unleaded.
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rusty nuts
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| posted on 2/1/06 at 07:03 PM |
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At the moment I'm using an additive with mine , but I intend fitting a modified head complete with unleaded valve seats as I'm not sure
of long term protection with additives and want to change while head is still OK as old unit
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SeaBass
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| posted on 2/1/06 at 07:11 PM |
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It's swings and roundabouts really. I thought I wouldn't do enough miles to warrant an unleaded head and have been using Millers VSP.
I'm always saying I'll change the x-flow but all I've done is change from a 1300 to a 1600 - it justs looks right in the bay...
Cheers
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phil m
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| posted on 3/1/06 at 04:22 PM |
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it cost me £110 to have the head converted to lead free -- did it as part of complete engine rebuild
Phil
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danfrith
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| posted on 3/1/06 at 09:26 PM |
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Other than the valve seats does the timing have to be altered at all.
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David Jenkins
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| posted on 3/1/06 at 10:33 PM |
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Yes, it must be retarded quite a lot if you're planning to use plain old unleaded.
No, if you plan to use super unleaded, or Optimax (as I do). In fact, I've advanced my timing a couple of degrees with Optimax! (now at 12
BTDC, instead of the book 10 degrees)
rgds,
David
[Edited on 3/1/06 by David Jenkins]
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