10 replies to this topic

[Girdy]

I am new to the forum and new to minis and technical challanges. Was really hoping I could get pointed in the right direction, to what would seem a simple question.

 

I have recently purchased a 1293 engine, that was removed from a car and fully running. I have now received the engine and trying to work out a few things

 

The engine is fitted with a weber carb and z manifold, the inlet manifold has a port with a bango type plug attached loose, my feeling from what i can see it may have been linked back to the Brake sevo. However my car does not have a sevo.

 

The engine is fitted with only two breathers one from the rocker cover and one from the Clutch casing.

 

Looks like the Engine breathers have been open to atmospher with a hose and think that the inlet manifold was connected to the sevo on the car it was removed.

 

Looking for suggestions if i can plug the inlet manifold port, or do i need to use vacuum to my breathers to ensure no positive pressure in casings?

 

Also the car has an electronic dizzy, do I need to connect the vacuum hose as the weber has no vacuum connection port i can see.

 

Sorry for all the questions, really new to webers and set up and looking for any advice of support.

 

You help is appreciated to a newbie

 

Robin

[cal844]

you are correct on the banjo fitting, it is for cars with brake servo's, as for the vacuum advance i'd just blank it off with chemical metal, or weld it up, it wont make that much difference

[Girdy]

Appreciate your reply, nothing worse when you buy something and its been all disconnected. Was not sure 100% what had been conected, looking at the photos the hose runs from the manifold to servo region.

 

The engine breathers were just routed with a hose to atmosphere, Rocker cover and Clutch housing. Is this acceptable in an MOT or do i need a catch tank

 

Really appreciate your help and info

[The Matt]

If you're not using a brake servo, you could adapt the servo take-off to run your dizzy's vacuum pipe.

[The Matt]

Venting breathers to atmosphere is not an MOT fail.

If you intend to use the car on a track, fit a catch tank. I'd fit one anyway if it were my car.

[Girdy]

Thanks eveyone, think this will be the start of many questions. Really appreciate all the feed back. Got to start some where, Matt, agree using a catch tank do they restrict the release of pressure i.e can over pressurise crank case etc, any recomendations of a particular type?

 

Matt what I have not worked out if the electronic dizzy fitted needs the Vacuum, my next challange, but as you say have a solution using the existing inlet manifold port.

 

Think its going to be a long winter of questions. Addicted now....

 

Thanks for all the input so far.

[cal844]

Thanks eveyone, think this will be the start of many questions. Really appreciate all the feed back. Got to start some where, Matt, agree using a catch tank do they restrict the release of pressure i.e can over pressurise crank case etc, any recomendations of a particular type?

 

Matt what I have not worked out if the electronic dizzy fitted needs the Vacuum, my next challange, but as you say have a solution using the existing inlet manifold port.

 

Think its going to be a long winter of questions. Addicted now....

 

Thanks for all the input so far.

there are catch tanks available 'off the shelf'

http://www.demon-twe...CFQsOwwoduUcAzg

 

 

 the crankcase breather doesnt pressurise the crankcase etc infact quite the opposite(if well maintained)  the electronic dizzy doesnt need the vacuum advance, as i run my 998 with it disconnected. the car runs perfect!!

Edited by cal844, 21 November 2013 - 01:38 PM.

[Girdy]

Thanks again for your help.

[KernowCooper]

If you use the car on road then your MPG and light throttle drive ability will be far better with a vacuum advance then with out it. Race cars dont use a vac unit as its of little advantage under performance driving with foot flat on the accelerator pedal

[Girdy]

Hi sorry in delayed reply been working away no internet:-( would it just be a case of connecting a vac hose to inlet manifold port to run an advance vacuum with the weber, car is not a servo brake system?

[gazza01]

I have a similar inlet, with the plug fitted. I have removed it to fit a connection for my vacuum advance. Took the plug to a plumbing shop for an adapter of some sort, and he fixed up with brass fittings for less than three quid.