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 Post subject: Long rod pistons options
PostPosted: Mon Jul 01, 2002 7:53 am 
I was just looking through some piston spec's and found another option for long rod pistons for the slant 6. The 2.8L GM pistons have a standard bore of 3.504" a compression distance of 1.598" a pin diameter of .9055" and an overall height of 3.00". The rod could be easily honed out from .901" to .905" to make the pin press in properly. Has anyone tried this combination yet?
The Federal Mogul number for this piston is L2492F.


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PostPosted: Mon Jul 01, 2002 3:01 pm 
I think Lou has. (Dart270)

slantzilla@excite.com


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PostPosted: Tue Jul 02, 2002 1:48 pm 
I have a set of the factory's cast 2.8 pistons and as you noted, it will work. Do you know the dish volume.
What is the availability / stock situation and appx. cost on these pistons?
DD
Quote:
:
: I was just looking through some piston spec's
: and found another option for long rod
: pistons for the slant 6. The 2.8L GM pistons
: have a standard bore of 3.504" a
: compression distance of 1.598" a pin
: diameter of .9055" and an overall
: height of 3.00". The rod could be
: easily honed out from .901" to
: .905" to make the pin press in
: properly. Has anyone tried this combination
: yet?
: The Federal Mogul number for this piston is
: L2492F.


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PostPosted: Tue Jul 02, 2002 2:12 pm 
Quote:
: I have a set of the factory's cast 2.8 pistons
: and as you noted, it will work. Do you know
: the dish volume.
: What is the availability / stock situation and
: appx. cost on these pistons?
: DD


Doug, the L2492F pistons I have found has went the way of the L2502F and are no longer available, which is a shame because they only cost about $33.00 each. We do make a cast version of this piston which is a part number 516P or 516CP. These pistons are dirt cheap at about $15.00 each and are readily available since they are the stock pistons from 86-93 Chevy truck 2.8L v-6. They wouldn't be the best for a race engine but would be a good substitute for a long rod streed engine.


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PostPosted: Tue Jul 02, 2002 2:43 pm 
Quote:
: I think Lou has. (Dart270)


Good memory, Dennis. I have had the 198 rod/2.8L Chev piston combo w/0.104" over block sitting in my collection, all machined and ready to go, for 6 years. Just haven't had a car or reason to build the motor. These pistons are slightly heavier than the 2.2s but are still a bit less than stock slant pistons. Mine are hypereut. Now that I have a garage again after 8 years, I can set the motor on the stand and put it together. I expect to try it out in the next 6-12 months.

Cheers,

Lou


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PostPosted: Tue Jul 02, 2002 7:46 pm 
Quote:
: Good memory, Dennis. I have had the 198
: rod/2.8L Chev piston combo w/0.104"
: over block sitting in my collection, all
: machined and ready to go, for 6 years. Just
: haven't had a car or reason to build the
: motor. These pistons are slightly heavier
: than the 2.2s but are still a bit less than
: stock slant pistons. Mine are hypereut. Now
: that I have a garage again after 8 years, I
: can set the motor on the stand and put it
: together. I expect to try it out in the next
: 6-12 months.
:
: Cheers,
:
: Lou

I was brousing through some specs on pistons tonight and came across the 4.6 and 5.4 new ford V8's the piston dia is 3.5something. Does anyone know how to find the rest of the specs. They would be avalible in many forms if they will work. I did manage to find the pin dia 22mm I think.


melam@nxs.net


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PostPosted: Wed Jul 03, 2002 7:06 am 
Quote:
: I was brousing through some specs on pistons
: tonight and came across the 4.6 and 5.4 new
: ford V8's the piston dia is 3.5something.
: Does anyone know how to find the rest of the
: specs. They would be avalible in many forms
: if they will work. I did manage to find the
: pin dia 22mm I think.


Elam,

I have a Silvolite piston catalog, and any machinist should have that info in such a book. If I think of it, I'll try to find it and look up those specs.

Lou


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