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MGB=MPG · 07-20-2011, 06:12 AM

why bother ..
angst on a shoestring
why not

no EPA tests with Top Fuel [nitromethane 20/methenol 70 castor oil 10]metered in to the intake ..

finally got this sweetheart on road ,, and run a little fuel through it . no base line yet . with the additives in the top oiler i am unable to set timing advance by ear as i have had prior success [set by ear is to advance timing on hill climbs moderate throttle until *ping* is detected then retard a tad]

using previously proved methodology attempted and when i put the timing light on it i was at 60 degrees advance ,NO PING /detonation detected ..
try setting your machine to 60 advanced and see if it will start and run ..

with timing light set advance to 20 degrees BTDC runs like silk..

trying to set mixture using the EGT , question is to set LOP or ROP
[Lean of Peak or Rich of Peak] .. trying to go LOP

timing set with a light 20 BTDC , twiddling with the EGT and Mixture , not to mention added some Restore product since when i tested compression it was *uneven* i expect it will take me 3 full tanks [1000 miles] to get a baseline..

then when i get baseline i can start trials on the additives ,,
baseline will be timing /mixture /MMO[mystery Marvel Oil ] in the top oiler

then try the Dope ,, Nitromethane Methanol Castor Oil / NM+M in different percentages / NM+M + water .. those in the Know call it MW50 [methanol water 50/50] MW25 [methanol water 75/25]

not to mention the nitro percents..

no FE test baseline but i have to say that 2 lane blacktop power trials it wound out to 5K RPM top cog faster than ever seen,

seems like that with extra power that came from {somewhere?] perhaps the top fuel? with proper power application that would result in increased FE ..
a big question is that IF NM+M in the Top results in increased FE does that increase justify the [not inconsiderable cost of nitromethane and fuel grade methanol] additive..

enthusiast would say its worth the price just for the smell of burnt top fuel and castor oil ..

proper power application is judged by monitoring the vacuum gage maximum FE results from the highest possible reading on the Vacuum gage .. i try on a hard hill climb to get no less than 5 INHG .. 10 INHG preferred..

there are those [D. Vizard}who would say the constant depression SU Carb can out perform sophisticated computer monitored systems , after all the computer monitored sys are only as good as the programming and the SU works analog on density altitude as detected by the Flow .

here is a picture of my check rider for your edification

i have to say this 1800 CC tractor engine sure sounds good ..
additionally would indicate that they built half a million of these ,,
a certain % remain on road none less than 33 years old .. in 30 years I bet you a jug of punch a bigger % of these machines will still road as compared with any of the new mods they are putting out now .. JMHO

here is fuel log ,, still trying to get base line established .ignition advance & mixture set ....historical FE is @ 27 MPG

07-20-2011, 06:12 AM	#16 (permalink)
MGB=MPG Smooth Operator Join Date: Feb 2011 Location: dover tn Posts: 147 Old Yellar - '79 MGB Tourer Drop-Hood Coupé Sports Cars 90 day: 25.83 mpg (US) Old Brown Ford - '91 Ford Bronco Custom MAGNUM - '05 DODGE MAGNUM SXT Thanks: 9 Thanked 15 Times in 14 Posts	why bother .. angst on a shoestring why not no EPA tests with Top Fuel [nitromethane 20/methenol 70 castor oil 10]metered in to the intake .. finally got this sweetheart on road ,, and run a little fuel through it . no base line yet . with the additives in the top oiler i am unable to set timing advance by ear as i have had prior success [set by ear is to advance timing on hill climbs moderate throttle until ping is detected then retard a tad] using previously proved methodology attempted and when i put the timing light on it i was at 60 degrees advance ,NO PING /detonation detected .. try setting your machine to 60 advanced and see if it will start and run .. with timing light set advance to 20 degrees BTDC runs like silk.. trying to set mixture using the EGT , question is to set LOP or ROP [Lean of Peak or Rich of Peak] .. trying to go LOP timing set with a light 20 BTDC , twiddling with the EGT and Mixture , not to mention added some Restore product since when i tested compression it was uneven i expect it will take me 3 full tanks [1000 miles] to get a baseline.. then when i get baseline i can start trials on the additives ,, baseline will be timing /mixture /MMO[mystery Marvel Oil ] in the top oiler then try the Dope ,, Nitromethane Methanol Castor Oil / NM+M in different percentages / NM+M + water .. those in the Know call it MW50 [methanol water 50/50] MW25 [methanol water 75/25] not to mention the nitro percents.. no FE test baseline but i have to say that 2 lane blacktop power trials it wound out to 5K RPM top cog faster than ever seen, seems like that with extra power that came from {somewhere?] perhaps the top fuel? with proper power application that would result in increased FE .. a big question is that IF NM+M in the Top results in increased FE does that increase justify the [not inconsiderable cost of nitromethane and fuel grade methanol] additive.. enthusiast would say its worth the price just for the smell of burnt top fuel and castor oil .. proper power application is judged by monitoring the vacuum gage maximum FE results from the highest possible reading on the Vacuum gage .. i try on a hard hill climb to get no less than 5 INHG .. 10 INHG preferred.. there are those [D. Vizard}who would say the constant depression SU Carb can out perform sophisticated computer monitored systems , after all the computer monitored sys are only as good as the programming and the SU works analog on density altitude as detected by the Flow . here is a picture of my check rider for your edification i have to say this 1800 CC tractor engine sure sounds good .. additionally would indicate that they built half a million of these ,, a certain % remain on road none less than 33 years old .. in 30 years I bet you a jug of punch a bigger % of these machines will still road as compared with any of the new mods they are putting out now .. JMHO here is fuel log ,, still trying to get base line established .ignition advance & mixture set ....historical FE is @ 27 MPG Attached Thumbnails