Other than by testing the vacuum advance unit, e.g. by sucking on the tube and seeing the points plate move, how would you know that it wasn't working?
So, I suppose the question really is, how big is the effect on fuel consumption, in various conditions like long runs and at steady speed?
Graham
Sprint Vacuum advance
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GrahamFountain
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- Joined: Sun Sep 08, 2013 3:35 pm
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Sprint Vacuum advance
The 16v Slant 4 engine is more fun than the 3.5 V8, because you mostly drive it on the upslope of the torque curve.
Factory 1977 TR7 Sprint FHC VVC 697S (Now all of, but still needs putting together)
B&Y 73 Dolomite Sprint UVB 274M (kids!)
1970 Maroon 13/60 Herald Convertable (wife's fun car).
Factory 1977 TR7 Sprint FHC VVC 697S (Now all of, but still needs putting together)
B&Y 73 Dolomite Sprint UVB 274M (kids!)
1970 Maroon 13/60 Herald Convertable (wife's fun car).
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Magenta Auto Sprint
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- Joined: Sun Jul 19, 2009 11:41 pm
- Location: Silsoe, Beds
Re: Sprint Vacuum advance
I had problems with my 1300 Distrbutor, I tested the vacumn unit off the distributor and also made sure that the mounting plate rotated freely, in my case the plate was siezed.
Suck on the vacum unit to see if it moves .
Malcolm
Suck on the vacum unit to see if it moves .
Malcolm
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GrahamFountain
- Guest contributor
- Posts: 1735
- Joined: Sun Sep 08, 2013 3:35 pm
- Location: St Annes on Sea, Lancs.
Re: Sprint Vacuum advance
"Eppur si muove", as [the other] Galileo said. The question is, other than being a sucker, how would one tell if it didn't move?
Graham
Graham
The 16v Slant 4 engine is more fun than the 3.5 V8, because you mostly drive it on the upslope of the torque curve.
Factory 1977 TR7 Sprint FHC VVC 697S (Now all of, but still needs putting together)
B&Y 73 Dolomite Sprint UVB 274M (kids!)
1970 Maroon 13/60 Herald Convertable (wife's fun car).
Factory 1977 TR7 Sprint FHC VVC 697S (Now all of, but still needs putting together)
B&Y 73 Dolomite Sprint UVB 274M (kids!)
1970 Maroon 13/60 Herald Convertable (wife's fun car).