Lifting the floor (slightly)
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unstable load
- Top Dog

- Posts: 1285
- Joined: Mon May 04, 2009 6:53 am
-
unstable load
- Top Dog

- Posts: 1285
- Joined: Mon May 04, 2009 6:53 am
Hi DJ
job for next week, go to a scrapyard, buy a Honda C70 engine and take it apart with the help of son, you can never start working on engines too young
and a v8 is a bit complicated when you are under five .
You might find this link handy http://www.pricemotorsport.co.nz/introduction.html
best regards
Mike
job for next week, go to a scrapyard, buy a Honda C70 engine and take it apart with the help of son, you can never start working on engines too young
You might find this link handy http://www.pricemotorsport.co.nz/introduction.html
best regards
Mike
poppet valves rule!
Hi guys- just going about putting the heads etc back on and I have opened the plug gaps etc and modded the plugs as per Dave Vizzards and Trevor langfeilds books (have always done this). But what do you guys think of indexing the spark plugs so they face the inlet?? Read about it in a few places - and just wandering if it is with the 55 minutes sitting with a box of plug washers to get them all uniform! Hav also read its about as effective as fanning a hat at your engine! Any experience?
Spent so much on trial and error!
I used to mess around doing the plugs as per Trevs instructions. But these days I buy ECS plugs from NGK that are already done
Personally I cant see the point in indexing spark plugs to be the same way round in all cylinders? I'm sure someone will be along to say why its a good idea. But it doesnt matter which way round the earth electrode ends up facing as the spark still comes from the same place in the middle of the plug?
Just my thoughts
Personally I cant see the point in indexing spark plugs to be the same way round in all cylinders? I'm sure someone will be along to say why its a good idea. But it doesnt matter which way round the earth electrode ends up facing as the spark still comes from the same place in the middle of the plug?
Just my thoughts
Perry Stephenson
MGB GT + Rover V8
9.62 @ 137.37mph
Now looking for 8 seconds with a SBC engine
http://www.youtube.com/watch?v=nVscbPHgue0&list=UUqIlXfSAoiZ--GyG4tfRrjw
https://www.youtube.com/watch?v=eg3avnsNKrc&index=2&list=FLqIlXfSAoiZ--GyG4tfRrjw
MGB GT + Rover V8
9.62 @ 137.37mph
Now looking for 8 seconds with a SBC engine
http://www.youtube.com/watch?v=nVscbPHgue0&list=UUqIlXfSAoiZ--GyG4tfRrjw
https://www.youtube.com/watch?v=eg3avnsNKrc&index=2&list=FLqIlXfSAoiZ--GyG4tfRrjw
Hi
as far as I see it if you have the big fat spark and the gaps wide enough to make use of it then indexing the plugs is not going to make any difference as you have ignited the mixture you can't ignite it more!. If you haven't got a big enough spark to fire off the mixture properly then indexing the plugs isn't going to help, you need to sort out the ignition to get a big fat spark. . . .
It also helps to buy the right length plugs, that makes a big difference
best regards
Mike
OOh will you look at that I have disagreed with Mr Vizard
as far as I see it if you have the big fat spark and the gaps wide enough to make use of it then indexing the plugs is not going to make any difference as you have ignited the mixture you can't ignite it more!. If you haven't got a big enough spark to fire off the mixture properly then indexing the plugs isn't going to help, you need to sort out the ignition to get a big fat spark. . . .
It also helps to buy the right length plugs, that makes a big difference
best regards
Mike
OOh will you look at that I have disagreed with Mr Vizard
poppet valves rule!
kiwicar wrote:Hi
as far as I see it if you have the big fat spark and the gaps wide enough to make use of it then indexing the plugs is not going to make any difference as you have ignited the mixture you can't ignite it more!. If you haven't got a big enough spark to fire off the mixture properly then indexing the plugs isn't going to help, you need to sort out the ignition to get a big fat spark. . . .
It also helps to buy the right length plugs, that makes a big difference![]()
best regards
Mike
OOh will you look at that I have disagreed with Mr Vizard
Stop beating yourself up Kiwi!!
So you were short of a few mm of insertion length. But thats all sorted now eh?
I'm glad to see that the pills worked
Perry Stephenson
MGB GT + Rover V8
9.62 @ 137.37mph
Now looking for 8 seconds with a SBC engine
http://www.youtube.com/watch?v=nVscbPHgue0&list=UUqIlXfSAoiZ--GyG4tfRrjw
https://www.youtube.com/watch?v=eg3avnsNKrc&index=2&list=FLqIlXfSAoiZ--GyG4tfRrjw
MGB GT + Rover V8
9.62 @ 137.37mph
Now looking for 8 seconds with a SBC engine
http://www.youtube.com/watch?v=nVscbPHgue0&list=UUqIlXfSAoiZ--GyG4tfRrjw
https://www.youtube.com/watch?v=eg3avnsNKrc&index=2&list=FLqIlXfSAoiZ--GyG4tfRrjw
Cold compression test on the engine (heads re-assemble so valves not bedded in yet) was approx 70-100 psi which I was reasonably pleased with in the freezing cold! (I know this doesn't really tell me much) - there is fuel getting in and I have varified idle timing with the timing light. So I am pretty sure it's some sort of a vacuum leak! So tomorow I think I will try a start while covering the choke portion (no choke on it) etc to raise the vacume a bit.figured if I restrict the air going through the carb then even if there is a vacuum leak it will drop the pressure enough to pull some fuel through! God you put your soul into these things, you love them, work on them, spend money on them.... Then within 24 hours you feel like sticking a rag in the tank and lighting a box of swans!!!
Spent so much on trial and error!




