SIII Petrol - Timing and dwell angle

D

Diogenes

Guest

• Jun 23, 2004

• #1

Hi,

What are the 'best' settings for the timing and dwell angle for a 2 1/4
petrol running on unleaded ?

3 bearing engine, weber carb.

Grateful for any tips on setting timing etc

Thanks

Andrew


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A

Austin Shackles

Guest

• Jun 22, 2004

• #2

On or around Tue, 22 Jun 2004 18:21:15 -0700, "Diogenes"
<[email protected]> enlightened us thusly:

>Hi,
>
>What are the 'best' settings for the timing and dwell angle for a 2 1/4
>petrol running on unleaded ?
>
>3 bearing engine, weber carb.
>
>Grateful for any tips on setting timing etc

advance the timing until it starts to pink under load going up hill, then
back it off about 2-3 degrees.


--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Quos deus vult perdere, prius dementat" Euripedes, quoted in
Boswell's "Johnson".

 

M

Mother

Guest

• Jun 23, 2004

• #3

On Tue, 22 Jun 2004 18:21:15 -0700, "Diogenes"
<[email protected]> wrote:

>running on unleaded

Erm, this isn't the original engine is it?


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D

Diogenes

Guest

• Jun 23, 2004

• #4

Original engine, saving up for an unleaded head !!

"Mother" <"@ {mother} @"@101fc.net> wrote in message
news:[email protected]...
> On Tue, 22 Jun 2004 18:21:15 -0700, "Diogenes"
> <[email protected]> wrote:
>
> >running on unleaded
>
> Erm, this isn't the original engine is it?
>
>
> --
> Some Land Roveresque (101 biased), links available
> from: http://links.solis.co.uk/Geek/X4_Land_Rover/
> I also have a little Land Rover site biased toward
> my beloved 101 "Grumble", at: http://www.101fc.net
>
>
> Reading this in 'alt.fan.landrover'? Did you know
> there's a group FAQ: http://www.aflfaq.dyndns.info


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D

David G. Bell

Guest

• Jun 23, 2004

• #5

On Wednesday, in article
<[email protected]>
"@{mother}@"@101fc.net "Mother" wrote:

> On Tue, 22 Jun 2004 18:21:15 -0700, "Diogenes"
> <[email protected]> wrote:
>
> >running on unleaded
>
> Erm, this isn't the original engine is it?

Here's a summary of the info I've picked up over the years.

The 2.25 petrol engine is not designed to run on unleaded fuel, as
without the lead, or a substitute, the engine suffers from valve-seat
erosion.

The solution is to fit hardened valve seats.

Since this required the existing valve seats to be cut back anyway, some
erosion can be tolerated. Keep an eye on the valve clearances.

In any case, erosion is worst with sustained high-speed running.



--
David G. Bell -- SF Fan, Filker, and Punslinger.

"History shows that the Singularity started when Sir Tim Berners-Lee
was bitten by a radioactive spider."

 

A

Austin Shackles

Guest

• Jun 23, 2004

• #6

On or around Wed, 23 Jun 2004 09:51:31 +0100 (BST),
[email protected] ("David G. Bell") enlightened us thusly:

>On Wednesday, in article
> <[email protected]>
> "@{mother}@"@101fc.net "Mother" wrote:
>
>> On Tue, 22 Jun 2004 18:21:15 -0700, "Diogenes"
>> <[email protected]> wrote:
>>
>> >running on unleaded
>>
>> Erm, this isn't the original engine is it?
>
>Here's a summary of the info I've picked up over the years.
>
>The 2.25 petrol engine is not designed to run on unleaded fuel, as
>without the lead, or a substitute, the engine suffers from valve-seat
>erosion.
>
>The solution is to fit hardened valve seats.
>
>Since this required the existing valve seats to be cut back anyway, some
>erosion can be tolerated. Keep an eye on the valve clearances.
>
>In any case, erosion is worst with sustained high-speed running.


The word from the LPG brigade is that some will erode and some won't, mostly
dependant on driving style as you say. The advice is much similar, run it
as is, check valve clearances regularly, and if it erodes, get hardened
seats fitted.
--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Festina Lente" (Hasten slowly) Suetonius (c.70-c.140) Augustus, 25

 

L

Larry

Guest

• Jun 26, 2004

• #7

As if that matters, when my engine is truly knackered it will be cheaper to
get a replacement than to go in for any head conversion bollox. Valve seat
erosion is the last thing I have to worry about I reckon.

As for high speed driving are we talking about 50 mph here

--
Larry
Series 3 rust and holes


""David G. Bell"" <[email protected]> wrote in message
news:[email protected]...
> On Wednesday, in article
> <[email protected]>
> "@{mother}@"@101fc.net "Mother" wrote:
>
>
> Here's a summary of the info I've picked up over the years.
>
> The 2.25 petrol engine is not designed to run on unleaded fuel, as
> without the lead, or a substitute, the engine suffers from valve-seat
> erosion.
>
> The solution is to fit hardened valve seats.
>
> Since this required the existing valve seats to be cut back anyway, some
> erosion can be tolerated. Keep an eye on the valve clearances.
>
> In any case, erosion is worst with sustained high-speed running.
>
>
>
> --
> David G. Bell -- SF Fan, Filker, and Punslinger.
>
> "History shows that the Singularity started when Sir Tim Berners-Lee
> was bitten by a radioactive spider."