What Have I Got Engine Wise Bx Or 405?

[kyepan 291]

Hi there,

 

I'm pretty sure its a bx engine because of the way the throttle cable points on the throttle body, this was different to the last one which i knew came out of a 405, also its a knock sensor fitted car on motronic, so that would be a 3 row.. correct?

 

 

So am I correct in thinking its a 1991 onwards BX engine, hopefully with a #4 inlet and a #2 exaust cam.

 

May take the covers off to check the cams.

[welshpug 1,627]

has it got a brake servo vacuum takeoff pipe attached or is the port blanked?

[kyepan 291]

has it got a brake servo vacuum takeoff pipe attached or is the port blanked?

sorry slightly confused, i would assume i've got a hose going to the brake servo from somewhere on the inlet tract. not sure if the vacume pipe attaches to the inlet manifold or the throttle body. will have a look after work and take a photo.

 

j

[welshpug 1,627]

sorry I should have explained, the BX runs the high pressure hydraulic brakes with no servo, if the stub/takeoff is blanked it would be a BX engine.

 

Don't know where the pipe would be though sorry.

[Ryan 99]

The servo pipe is on the inlet manifold, on the top of the plenum close the where the throttle body is. There are three outlets - one on the left for the fuel pressure regulator, one in the middle for the idle valve, and one on the right for the servo.

 

A 405 engine will have all three outlets uncovered. A BX engine will have a little blanking plug on the right hand one, as the outlet for the servo isn't used.

 

This is a BX engine with the planking plug still on:

 

[kyepan 291]

The servo pipe is on the inlet manifold, on the top of the plenum close the where the throttle body is. There are three outlets - one on the left for the fuel pressure regulator, one in the middle for the idle valve, and one on the right for the servo.

 

A 405 engine will have all three outlets uncovered. A BX engine will have a little blanking plug on the right hand one, as the outlet for the servo isn't used.

 

This is a BX engine with the planking plug still on:

 

ah right, but for us to run a servo assisted brake setup, we will be running the brake hose (shown in the photo) attached.

 

I keep on getting information regarding the position of the throttle cable mounting on the throttle body, and that seems to be another difference between the bx and 405

[KRISKARRERA 2 1 Cars]

A pre-91 405 will have that servo pipe blanking thingy too though. However, as it is there on that engine and you have a knock sensor it is therefore from a bx.

[kyepan 291]

A pre-91 405 will have that servo pipe blanking thingy too though.

where does the brake servo feed from if that's blanked off?

[welshpug 1,627]

High pressure hydraulic brake system, no servo.

 

but as you say there's a Knock sensor, as well as the blanked servo take-off, I'd be inclined to say BX like Kriss.

Edited July 3, 2008 by welshpug

[maxi 36 1 Cars]

Post a pic of the engine bay and I will tell you straight away .

 

Maxi