Intake Manifold Injection

[MGB=MPG]

here is the install.

i had setbacks on buffing out

i hope to post up FE results ,, as time goes bye ...

[ConnClark]

Why bother with this when EPA tested several things like this and showed they were bunk?

[George Tyler]

in 1971 I bought an Austin 1800, was like an overgrown mini with the "B" series engine. Overhauled it 5 times in 1 year.... until I found that the timing chain tentioner was cocking in the bore at high RPM... I liked the SU carb, something I could "twiddle"!

[Arragonis]

True, in an older car 'tuning' was a skill, an art almost - some did it by ear and feel.

[pounsfos]

yeah my carb on my starlet loves to make itself rich so every 3months or so just have to lean the b#tch out. same with idle,

Cant wait to fiddle with my new fuel injection system, unfortunatly i still need to buy some more parts to upgrade haha, should be a good conversion though

[MGB=MPG]

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

[some_other_dave]

There was an article in Classic Motorsports magazine a few years ago about timing and jetting on a Bee. They did their tweaking on a dyno, and were (of course) going for max power. I remember that, on the timing side at least, they found max power by backing off a couple of degrees from "just before it pings".

I'm not sure how that translates to efficiency, if indeed it does, at part-throttle.

-soD

[MGB=MPG]

i think power tuning and economy tuning are tightly related
i wonder if anyone can speak to setting mixture using the EGT [exhaust Gas temp] ,, trying to set LOP [lean of Peak]

am i correct in thinking that when i go lean of peak the EGT will drop?


just fueled .. here is the graph ,,,added some product *restore* need to get stabilized before the A-B-A with the Methanol/nitromethane/castor oil Soup in the top jar..
hope restore will help my oil pressure and cyl compression

[Arragonis]

Originally Posted by MGB=MPG

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 .

The old SU was a very fine device for FE and precise fuel metering although I don't know if Mr Vizard would still advocate an SU over FI for every application these days, although for an older engine like the B it would probably be preferred.

I think he (or someone using his name) posts here.

Have you de-smogged your B ?

[EdKiefer]

Originally Posted by MGB=MPG

i think power tuning and economy tuning are tightly related
i wonder if anyone can speak to setting mixture using the EGT [exhaust Gas temp] ,, trying to set LOP [lean of Peak]

am i correct in thinking that when i go lean of peak the EGT will drop?


just fueled .. here is the graph ,,,added some product *restore* need to get stabilized before the A-B-A with the Methanol/nitromethane/castor oil Soup in the top jar..
hope restore will help my oil pressure and cyl compression

I think that depends on how lean you can get a carb system . I might be wrong but I don't think you can get carb systems to run good at lean mixtures (above 15:1) like fuel injector .
I used to work on performance vehicles and we tried to keep EGT below 1400 but this was WOT and turbo's . At part throttle you can probably stand a little more EGT .

I did a quick google search and this came up .

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