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Nov 23, 2014 20:13:59 GMT
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I'm running a 1.8dx in a mk1 golf gti, on bike carbs, fast road cam, vernier pulley, uprated belt and 4-2-1 manifold. I had it rolling roaded last year and it made 134bhp/131ftlbs, I'm looking at getting the most out of it and I'm considering a polished head?
Anyone running one atm?
What's the before and after differences?
Worth it or not?
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stealthstylz
Club Retro Rides Member
Posts: 14,841
Club RR Member Number: 174
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Polished/ported head?stealthstylz
@stealthstylz
Club Retro Rides Member 174
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Nov 23, 2014 21:19:04 GMT
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Polishing wont make any difference.A properly ported head will make decent power improvement, along with skimming it to raise the compression.
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Nov 23, 2014 21:50:23 GMT
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A lot of it depends on who does the work and how well they know the heads
Just because some one can do a good job on a pinto doesn't mean they will do a good job of your vw one
Port matching is a good way to start
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mk2cossie
Club Retro Rides Member
Posts: 2,960 
Club RR Member Number: 77
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Polished/ported head?mk2cossie
@mk2cossie
Club Retro Rides Member 77
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Nov 24, 2014 13:40:51 GMT
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Is the 1.8dx a GTi engine at all? If not, the easiest step to take is to get a GTi head as they have bigger valves I seem to recall  |
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