Just bought an MGC, how do I make it handle?!
Discussion
MrNickB said:
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The injector install is pretty Heath-Robinson; holes drilled in the inlet manifold, and BMW/Bosch injectors strapped in. It'll do the job for the time being...
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Interesting pictures. Keep them coming please.The injector install is pretty Heath-Robinson; holes drilled in the inlet manifold, and BMW/Bosch injectors strapped in. It'll do the job for the time being...
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As Heath Robinson installs go ( no temporary bodge ) that looks a pretty tidy installation to me.
So that's what a clean engine looks like? Very nice. I take it you're running EDIS but conventional HS6?
Do you think there are enough MGC owners out there to justify a tuned intake manifold, with multipoint injectors project? I'm thinking now of a turnkey offering of a Megasquirt/EDIS install onto this motor.
I have no idea whether people wanting improved performance would want to so radically upgrade the existing engine, or whether those wanting modern performance would just prefer to drop in a BMW drivetrain.
Do you think there are enough MGC owners out there to justify a tuned intake manifold, with multipoint injectors project? I'm thinking now of a turnkey offering of a Megasquirt/EDIS install onto this motor.
I have no idea whether people wanting improved performance would want to so radically upgrade the existing engine, or whether those wanting modern performance would just prefer to drop in a BMW drivetrain.
Yes running with a Emerald ECU and AT power TB's this is a near race engine at 285hp.
We have done one other C with jenvey TB's that made 175hp but was a standard engine, the costs involved and time to get the linkages right was out of most peoples pockets.
A cheaper solution is to do as you have done less complicated ECU and injector set up, You could use Weber bodies but again its cost. The other thing was a direct to head TB !
A Healey guy used injectors set into the SU's can't find his page now long time ago.
There may well be a market for a injected intake manifold but how do you make for the mass market and what / which TB setup do you use.
We have done one other C with jenvey TB's that made 175hp but was a standard engine, the costs involved and time to get the linkages right was out of most peoples pockets.
A cheaper solution is to do as you have done less complicated ECU and injector set up, You could use Weber bodies but again its cost. The other thing was a direct to head TB !
A Healey guy used injectors set into the SU's can't find his page now long time ago.
There may well be a market for a injected intake manifold but how do you make for the mass market and what / which TB setup do you use.
chormy,
just saying, and my engine bay isn’t anything like tidy –
I'm a bit surprised at your HT leads being tie-wrapped together and the sharp turn and tie wrapping of oil tube
the HT leads look a bit stretched and possibly close to breather canister
(I’m not on commission) you could get some very good HT leads made to measure for no extra cost from a very good manufacturer – http://www.performanceleads.co.uk/ and Peter Burgess has independently confirmed on hiss rolling road that they actually give a small improvement
just saying, and my engine bay isn’t anything like tidy –
I'm a bit surprised at your HT leads being tie-wrapped together and the sharp turn and tie wrapping of oil tube
the HT leads look a bit stretched and possibly close to breather canister
(I’m not on commission) you could get some very good HT leads made to measure for no extra cost from a very good manufacturer – http://www.performanceleads.co.uk/ and Peter Burgess has independently confirmed on hiss rolling road that they actually give a small improvement
The oil pressure tube is infact his dual gauge temp sender tube, and mine looks virtually identical!
The HT leads do look a bit short but I'm sure they fit, the power Shauns engine makes speaks for itself, I forget Shaun is it running wasted spark? If so that explains the bundled leads, although any real problems with them being bundled is in the real world probably minute when it's wasted spark it turns in to no problem at all.
The HT leads do look a bit short but I'm sure they fit, the power Shauns engine makes speaks for itself, I forget Shaun is it running wasted spark? If so that explains the bundled leads, although any real problems with them being bundled is in the real world probably minute when it's wasted spark it turns in to no problem at all.
wildoliver said:
The oil pressure tube is infact his dual gauge temp sender tube,
yeah I know there's one in the Midget too 
wildoliver said:
and mine looks virtually identical!
yeah but you're not unduly bothered about under bonnet tidinessyou should have let things ride just a little longer for a bit of dancing in the dark
"You can't start a fire, you can't start a fire without a spark"
I'm thinking of a welded alloy intake manifold, six equal length runners (prob about 11" for optimum efficiency at 75mph) into a plenum.
The alternative is short runners into a plenum, which of course gets you no Helmholtz resonance, but is better for heavy breathing race setups.
Add a single throttle body with idle bypass built in, onto the plenum. I've got a Vauxhall (I think Granada) body which I'm intending to use. Both runner designs would use injectors on 45deg pieces, pointing onto the back of the valves. Then a fuel rail with some sort of bracketry onto the manifold.
I'll get round to drawing it up one of these days
The alternative is short runners into a plenum, which of course gets you no Helmholtz resonance, but is better for heavy breathing race setups.
Add a single throttle body with idle bypass built in, onto the plenum. I've got a Vauxhall (I think Granada) body which I'm intending to use. Both runner designs would use injectors on 45deg pieces, pointing onto the back of the valves. Then a fuel rail with some sort of bracketry onto the manifold.
I'll get round to drawing it up one of these days
That's a very interesting setup. Looks like fuel injectors on that extruded drillable fuel rail, and also looks like some kind of supercharger? If not, what's that belt on the RHS?
It looks like you've retained the non-equal inlet runners, so will be interested to see what power output you get. Although if it's boosted, that'll rather mask any inefficiencies from cylinders!
It looks like you've retained the non-equal inlet runners, so will be interested to see what power output you get. Although if it's boosted, that'll rather mask any inefficiencies from cylinders!
Hi, the injectors are let into the inlet manifold as close to the ports as possible, this is pretty important to get the best running characteristics. It's an equal length inlet manifold. Yes, the point of it is that it's supercharged. It's a positive displacement blower, an Opcon. It has a v-belt setup on the front you may just be able to make out. This setup was designed and built by Hans Pedersen in Australia for me. Took quite some R&D and time. There some more pics on here:
http://www.hi-flow.com/HP003cSuper.html
http://www.hi-flow.com/HP003cSuper.html
Fantastic conversion, it looks great.
My concern with boosting the MGC was what the underlying engine could take before breaking or wearing excessively. Does boosting require the full bottom end rebuild, i.e. crankshaft balance and coating, new conrods, LP pistons, new cylinders, etc.?
I know the engine's good for at least 200k miles, but that's assuming not a great deal of hard life!
My concern with boosting the MGC was what the underlying engine could take before breaking or wearing excessively. Does boosting require the full bottom end rebuild, i.e. crankshaft balance and coating, new conrods, LP pistons, new cylinders, etc.?
I know the engine's good for at least 200k miles, but that's assuming not a great deal of hard life!
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