The V8 crank is the same shape as four cylinder. In the four cylinder engine
the first and last pistons are up when the middle ones are down. It doesn9t
matter whether the firing order is 1342 or as fords (europe) used to be1243,
the pairs are the same, only the cam and high tension leads order change. I
took the firing order and cylinder numbering out of the Haynes manual, but
it doesn9t change anything. The first cylinder on the left bank is paired
with the last cylinder on the left bank. The second cylinder on the left
bank is paired with the third cylinder on the left bank. The same is true
for the for the right bank. Each bank being like a four cylinder engine.
You've got the in line six spot on, but what about the V6? I have never seen
a five cylinder audi engine, and the my v twin Moto Guzzi bike engine
dosen't pair up!. When setting high performance engine tappets, one adjusts
one valve at a time, inlet fully open, adjust the inlet on it's opposite
cylinder, this means that the cam is at it's absolute lowest point! But
that's a wild cam shaft story!
Matthew Tinker
> Neat Trick!! I think the pairings listed are wrong, though (or maybe I
> didn't get enough sleep?). Pairs should be opposite in the firing
> order; for the 1-8-4-3-6-5-7-2 order, I think the pairs would be 1&6 -
> 8&5 - 4&7 - 3&2. The 235's firing order is 1-5-3-6-2-4, so the pairs
> would be 1&6 - 5&2 - 3&4.
>
> Bill Gray
> william.gray@snet.net
>
>
> -----Original Message-----
> From: owner-oletrucks@autox.team.net
> [mailto:owner-oletrucks@autox.team.net] On Behalf Of Tinker
> Sent: Wednesday, January 30, 2002 7:40 PM
> To: oletrucks@autox.team.net
> Subject: Re: [oletrucks] Adjusting valves
>
>
> The easiest way I know for finding out when a cylinder is at TDC
> ignition stroke is when it's opposite cylinder is "on the rock" (I'm a
> Brit, you may have another term, it means that both valves are slightly
> open, valve
> overlap) both push-rods are "tight", under pressure. To establish that
> no 1 on a V8 is on TDC ignition, No 7 cylinder is also on TDC but "on
> the rock"(the push-rods won't turn easily).
>
> N01cylinder tdc->n07cylinder"on the rock" adjust N01cylinder
> N02tdc-> N08"on the rock"adjust N02cylinder
> N03tdc-> N05"on the rock"adjust N03cylinder
> N04tdc-> N06"on the rock"adjust N04cylinder
> N05tdc-> N03"on the rock"adjust N05cylinder
> N06tdc-> N04"on the rock"adjust N06cylinder
> N07tdc-> N01"on the rock"adjust N07cylinder
> N08tdc-> N02"on the rock"adjust N08cylinder
>
> This is for a firing order of 1-8-4-3-6-5-7-2
>
> Does this make sense?
> Matthew Tinker
>
>
>> I know I should know this, but need a refresher. How do I adjust the
>> rocker arms to set my valves on my '58 235? I know I need to get them
>
>> when each piston is at its own TDC, but don't remember how to find it
>> for any but #1. I can find TDC for #1, but don't remember how to take
>
>> it from there. I know I will set them initially when cold to get
>> close, and then bring engine to operating temp, and adjust them to hot
>
>> while the engine is running. So, can anyone give me a refresher in
>> valve adjusting 101? OH, yeah...I have solid lifters.
>>
>> Thanks,
>>
>> Rob
>>
>> My Zen Moment for the Day: Always remember, you're unique! Just like
>
>> everyone else. oletrucks is devoted to Chevy and GM trucks built
>> between 1941 and 1959
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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