adjusting valve clearance

P

Paul

Guest

• Aug 1, 2005

• #1

in the haynes manual it says adjust the clearance on a cold engine. but what
if the engine is warm, should you allow a slightly larger clearance?

paul

 

D

[email protected]

Guest

• Aug 1, 2005

• #2

If the manual says cold, it means stone cold, like first thing in the
morning. How are you going to measure "slightly"?

(series engines tappets are 10 thou hot or cold, which I have never
really understood. Surely it's one or the other?)

Don't risk it - do it next time you have a cold engine.

DaveP

 

S

Steve Taylor

Guest

• Aug 1, 2005

• #3

[email protected] wrote:
> (series engines tappets are 10 thou hot or cold, which I have never
> really understood. Surely it's one or the other?)

If you were really cunning, or bloody lucky, one bit that expanded "up"
could be countered by another bit expanding "down".

Steve

 

A

Austin Shackles

Guest

• Aug 1, 2005

• #4

On or around Mon, 1 Aug 2005 14:39:13 +0100, "Paul"
<[email protected]> enlightened us thusly:

>in the haynes manual it says adjust the clearance on a cold engine. but what
>if the engine is warm, should you allow a slightly larger clearance?
>
on what?

the plate on the top of my 2¼ says "valve clearnaces 0.010 engine hot or
cold".


--
Austin Shackles. www.ddol-las.net my opinions are just that
Too Busy: Your mind is like a motorway. Sometimes it can be jammed by
too much traffic. Avoid the jams by never using your mind on a
Bank Holiday weekend.
from the Little Book of Complete B***ocks by Alistair Beaton.

 

A

Austin Shackles

Guest

• Aug 1, 2005

• #5

On or around 1 Aug 2005 08:20:37 -0700, [email protected]
enlightened us thusly:

>If the manual says cold, it means stone cold, like first thing in the
>morning. How are you going to measure "slightly"?
>
>(series engines tappets are 10 thou hot or cold, which I have never
>really understood. Surely it's one or the other?)
>

just means that the expansion in the head and in the valve stems is the
same. You can adjust it at any point.


--
Austin Shackles. www.ddol-las.net my opinions are just that
Too Busy: Your mind is like a motorway. Sometimes it can be jammed by
too much traffic. Avoid the jams by never using your mind on a
Bank Holiday weekend.
from the Little Book of Complete B***ocks by Alistair Beaton.

 

J

JD

Guest

• Aug 1, 2005

• #6

Paul wrote:

> in the haynes manual it says adjust the clearance on a cold engine. but
> what if the engine is warm, should you allow a slightly larger clearance?
>
> paul

It would help if we knew what engine you are talking about. If it is the
Series 2/3 2.25 petrol or diesel, it can be set hot or cold or anywhere in
between, as the expansion of the head and the valve gear compensate for
each other. Although my experience is that there is about one thou increase
in gap when hot. If this is not the engine you are talking about, then set
as specified in the manual (some engines I have worked on specify "hot and
running", which can get messy).
JD

 

A

Austin Shackles

Guest

• Aug 1, 2005

• #7

On or around Tue, 02 Aug 2005 06:59:59 +1000, JD <[email protected]>
enlightened us thusly:

>Paul wrote:
>
>> in the haynes manual it says adjust the clearance on a cold engine. but
>> what if the engine is warm, should you allow a slightly larger clearance?
>>
>> paul
>
>It would help if we knew what engine you are talking about. If it is the
>Series 2/3 2.25 petrol or diesel, it can be set hot or cold or anywhere in
>between, as the expansion of the head and the valve gear compensate for
>each other. Although my experience is that there is about one thou increase
>in gap when hot. If this is not the engine you are talking about, then set
>as specified in the manual (some engines I have worked on specify "hot and
>running", which can get messy).

and rather silly. mind, the haynes series book says "cold", despite what
the engine itself has on it.

--
Austin Shackles. www.ddol-las.net my opinions are just that
"Festina Lente" (Hasten slowly) Suetonius (c.70-c.140) Augustus, 25