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Old 06-30-2010, 08:32 AM   #16
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Start using a lower nitro content like 25% or 20% add 2 fuel filters and was on the throttle. But they are right I is a .28 it's not going to get great mileage.
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Old 07-01-2010, 06:32 PM   #17
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Originally Posted by wiktor0410 View Post
Hi, I would to know what should I do more to get better fuel mileage with my .28 engine (exactly it's SH .28 P8 engine).

So far i have done:

- gas cooler
- O.S. 2060 pipe
- some sleeve and crankshaft mods (ports enlarged and glass polished)

I have reached 8 minutes race runtime on mid-open track. I've heard that adding a shim under the head can help - is it true? What else can I do to get my runtime longer?
I race in the past with a dynamite .28 engine...SH 28 6 PORT engine ..
with SH based plugs(Lrp,Nosram,Dynamite,SH Standar plugs) and with a 086 dynamite pipe,25% byron with stock shimming and 7.5 venturi i pit on the limit at 8,30,,, You can get it to run more this engine ...
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