RB head on L-Gata

[atomman]

Hi Gary

great project as always.

Have you considered the clearance on a LHD drive car for the carbs? I guess you have to relocate the battery.
If you look at a Z432 the manifold looks non existent, still looks tight with trumpets, and that’s on a RHD car.
Looks very tight to have 40/45’s on a LHD, also do you think you will have any problems with the exhaust manifold?

I'm assuming you’re going to fit in your car when running.

Steve

Evening Steve

I have about 260mm to the suspension tower on the inner wing , the cut down manifold & carb with trumpets is 250mm at the moment , but I can lose some more length and also plan to clock the engine over a bit hopefully giving some more room,

Exhaust manifold wise , I'm gonna have to make one, I've got a pipe bender I knocked up in work , so hopefully I can come up with something that fits the gap,

will make a bench run rig to test it before the car i think .

 

[Pondo]

That’s neat. Shorter manifold... more power

Is that true, do you get more power from a shorter manifold?

 

[Bazzateer]

Generally, longer inlet tracts equal more low down and mid range torque whereas shorter ones equal more bhp higher up the rev range.

 

[atomman]

Is that true, do you get more power from a shorter manifold?

this is an old VW pic but explains it well.

 

[atomman]

this is a handy calc

http://www.exx.se/techinfo/runners/runners.html

 

[Alphabettispaghetti]

would the angle you cut/mount them depend on the final angle

Is that true, do you get more power from a shorter manifold?

totally. its total inlet tract length. that's part of the reason flat slide carbs are so narrow.

 

[atomman]

would the angle you cut/mount them depend on the final angle.

yeah float bowls need to be pretty level in the car , so will tack the DCOE flanges on for now,

but if use ITB's it wouldn't matter ............

 

[Alphabettispaghetti]

yeah float bowls need to be pretty level in the car , so will tack the DCOE flanges on for now,

but if use ITB's it wouldn't matter ............

do you want to be 70% cool or 150%.

ITB's are for ladies.

 

[uk66fastback]

ITB's are for ladies.

The quote of lockdown (are we still in lockdown?)

 

[jonbills]

do you want to be 70% cool or 150%.

ITB's are for ladies.

I'm a lady.

 

[atomman]

Some bearing's turned up today . they fit inside the crank sprocket, and I will turn up a bit of D2 for the inner to run on for now, and also dowel pin 2 of the sprocket's together to step out to the Rb cam wheels,

Hopefully it will all become clear when its together,

 

[AliK]

I'm a lady.
View attachment 38802

A lady with perfect filling and decent power across the range is an elegant one.

A lady with a gruff voice and temperament for has her charms also, in a different way!


Strangely though Jon, that is the best picture of you yet! Uncanny!

 

[jonbills]

View attachment 38803

Some bearing's turned up today . they fit inside the crank sprocket, and I will turn up a bit of D2 for the inner to run on for now, and also dowel pin 2 of the sprocket's together to step out to the Rb cam wheels,

Hopefully it will all become clear when its together,

intriguing!

 

[jonbills]

A lady with perfect filling and decent power across the range is an elegant one.

A lady with a gruff voice and temperament for has her charms also, in a different way!


Strangely though Jon, that is the best picture of you yet! Uncanny!

thankyou, young man!

 

[Alphabettispaghetti]

View attachment 38803

Some bearing's turned up today . they fit inside the crank sprocket, and I will turn up a bit of D2 for the inner to run on for now, and also dowel pin 2 of the sprocket's together to step out to the Rb cam wheels,

Hopefully it will all become clear when its together,

I see what you're doing. you are a smartie pants aren't you!

 

[atomman]

bit of turning today , to make a middle shaft



Now we have this, middle shaft pressed into the water blank plug hole with roller bearings pressed into the crank sprocket's , chain goes up then steps out the the Rb cam ends , and still fits inside L-gata front cover, bit stuck now until i go back to work because I need a miller for the head modifications ,

 

[atomman]

If it works out right I should be able to run one idler sprocket on an existing RB mounting point and a tensioner on the other side then need to make a cover to stop the oil from spraying round the engine bay , something like the original RB item, well a nod to it,

 

[jonbills]

I still don't get why you've got a bearing in the crank sprocket?

 

[atomman]

I still don't get why you've got a bearing in the crank sprocket?

Because they need to spin on the middle shaft , that is gonna be TiG'd to the head ,

I haven't put a bearing in the Crankshaft sprocket, if that's what you were thinking, only the 2 that are running on the middle shaft,

 

[jonbills]

Because they need to spin on the middle shaft , that is gonna be TiG'd to the head ,

I haven't put a bearing in the Crankshaft sprocket, if that's what you were thinking, only the 2 that are running on the middle shaft,

doh! yes, got it now thanks Gary.