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Carolina Watercraft Works

External


Since: Apr 30, 2005
Posts: 109



(Msg. 1) Posted: Fri Jun 13, 2008 9:01 am
Post subject: Aluminum cylinder heads
Archived from groups: alt>autos>dodge>trucks (more info?)
Any insight on any of the aluminum heads out there for the
2500 with 360?
--
------------------------------------------
Laszlo Almasi
----Cool Toys (formerly Carolina Watercraft Works)
----Mack Daddy Trailers
----Ice Angels

 >> Stay informed about: Aluminum cylinder heads 
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Steve Lusardi

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Since: Sep 09, 2004
Posts: 151



(Msg. 2) Posted: Fri Jun 13, 2008 4:23 pm
Post subject: Re: Aluminum cylinder heads [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
I have used quite a few aluminum heads on several different engines and I
will tell you that iron heads will make just as much HP as aluminum, all
other factors being the same, They will save about 40 lbs in weight, but
they will also cost you fuel economy. Iron head motors reach their peak
efficiency around 195 degrees F, where aluminum heads require 215 degrees
optimum water temp for max efficiency. These facts I have deterimed
personally on an engine dyno. This is not second hand data. These
unadvertized facts are due to the difference in heat rejection between iron
and aluminum, hence the difference in water temperature for max efficiency.
Normally this has little meaning, but at the cost of fuel today, should be
consifered. Of course the weight savings of aluminum mitigates the vaue of
the difference slightly, but as fuel cost climbs, this efficiency difference
should now be considered.
Steve

"Carolina Watercraft Works" <cooltoys.RemoveThis@bellsouth.net> wrote in message
news:Yau4k.4051$PZ6.3702@bignews5.bellsouth.net...
> Any insight on any of the aluminum heads out there for the
> 2500 with 360?
> --
> ------------------------------------------
> Laszlo Almasi
> ----Cool Toys (formerly Carolina Watercraft Works)
> ----Mack Daddy Trailers
> ----Ice Angels
>
>
>

 >> Stay informed about: Aluminum cylinder heads 
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Login to vote
Carolina Watercraft Works

External


Since: Apr 30, 2005
Posts: 109



(Msg. 3) Posted: Fri Jun 13, 2008 4:23 pm
Post subject: Re: Aluminum cylinder heads [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
That's the sort of info I was looking for.

I'm still getting some oil leakage into my cylinders and was thinking
I may need to replace the valve stem seals and figured I would look
at my options. If I was racing then I may go with the aluminum heads
but if there is really no difference then why spend the money.

I'm also thinking that while I'm having the work done....to replace the
rocker arms with either Viper rockers or some aftermarket roller rocker.
I know it has been done but I've yet to see what the result was from
anyone that has done this.

--
------------------------------------------
Laszlo Almasi
----Cool Toys (formerly Carolina Watercraft Works)
----Mack Daddy Trailers
----Ice Angels


"Steve Lusardi" <stevenospam.TakeThisOut@lusardi.de> wrote in message
news:g2tvrp$ldc$01$1@news.t-online.com...
>I have used quite a few aluminum heads on several different engines and I
>will tell you that iron heads will make just as much HP as aluminum, all
>other factors being the same, They will save about 40 lbs in weight, but
>they will also cost you fuel economy. Iron head motors reach their peak
>efficiency around 195 degrees F, where aluminum heads require 215 degrees
>optimum water temp for max efficiency. These facts I have deterimed
>personally on an engine dyno. This is not second hand data. These
>unadvertized facts are due to the difference in heat rejection between iron
>and aluminum, hence the difference in water temperature for max efficiency.
>Normally this has little meaning, but at the cost of fuel today, should be
>consifered. Of course the weight savings of aluminum mitigates the vaue of
>the difference slightly, but as fuel cost climbs, this efficiency
>difference should now be considered.
> Steve
>
> "Carolina Watercraft Works" <cooltoys.TakeThisOut@bellsouth.net> wrote in message
> news:Yau4k.4051$PZ6.3702@bignews5.bellsouth.net...
>> Any insight on any of the aluminum heads out there for the
>> 2500 with 360?
>> --
>> ------------------------------------------
>> Laszlo Almasi
>> ----Cool Toys (formerly Carolina Watercraft Works)
>> ----Mack Daddy Trailers
>> ----Ice Angels
>>
>>
>>
>
>
 >> Stay informed about: Aluminum cylinder heads 
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Steve Lusardi

External


Since: Sep 09, 2004
Posts: 151



(Msg. 4) Posted: Sat Jun 14, 2008 1:23 am
Post subject: Re: Aluminum cylinder heads [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Roller rockers really work well. They save side thrust on the valve guide,
even at nominal lift and ramp speeds. I use rollers on ALL my motors, even
my Harley.
Steve

"Carolina Watercraft Works" <cooltoys DeleteThis @bellsouth.net> wrote in message
news:iAv4k.4317$Nr.3207@bignews6.bellsouth.net...
> That's the sort of info I was looking for.
>
> I'm still getting some oil leakage into my cylinders and was thinking
> I may need to replace the valve stem seals and figured I would look
> at my options. If I was racing then I may go with the aluminum heads
> but if there is really no difference then why spend the money.
>
> I'm also thinking that while I'm having the work done....to replace the
> rocker arms with either Viper rockers or some aftermarket roller rocker.
> I know it has been done but I've yet to see what the result was from
> anyone that has done this.
>
> --
> ------------------------------------------
> Laszlo Almasi
> ----Cool Toys (formerly Carolina Watercraft Works)
> ----Mack Daddy Trailers
> ----Ice Angels
>
>
> "Steve Lusardi" <stevenospam DeleteThis @lusardi.de> wrote in message
> news:g2tvrp$ldc$01$1@news.t-online.com...
>>I have used quite a few aluminum heads on several different engines and I
>>will tell you that iron heads will make just as much HP as aluminum, all
>>other factors being the same, They will save about 40 lbs in weight, but
>>they will also cost you fuel economy. Iron head motors reach their peak
>>efficiency around 195 degrees F, where aluminum heads require 215 degrees
>>optimum water temp for max efficiency. These facts I have deterimed
>>personally on an engine dyno. This is not second hand data. These
>>unadvertized facts are due to the difference in heat rejection between
>>iron and aluminum, hence the difference in water temperature for max
>>efficiency. Normally this has little meaning, but at the cost of fuel
>>today, should be consifered. Of course the weight savings of aluminum
>>mitigates the vaue of the difference slightly, but as fuel cost climbs,
>>this efficiency difference should now be considered.
>> Steve
>>
>> "Carolina Watercraft Works" <cooltoys DeleteThis @bellsouth.net> wrote in message
>> news:Yau4k.4051$PZ6.3702@bignews5.bellsouth.net...
>>> Any insight on any of the aluminum heads out there for the
>>> 2500 with 360?
>>> --
>>> ------------------------------------------
>>> Laszlo Almasi
>>> ----Cool Toys (formerly Carolina Watercraft Works)
>>> ----Mack Daddy Trailers
>>> ----Ice Angels
>>>
>>>
>>>
>>
>>
>
>
 >> Stay informed about: Aluminum cylinder heads 
Back to top
Login to vote
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