11 or 12mm pump head
I think I've pretty much maxed out my pump - turning it up any higher doesn't seem to create any more smoke.
I have a spare pump to rebuild with new seals, so I was thinking about upgrading to an 11 or 12mm head at the same time.
Are there any disadvantages to doing this? Does the bigger head have to come from a 6 cylinder donor car? If it does, I don't think there is anything in the UK i could rob that from...
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