Block interchangability

[txrocco at sbcglobal.net (ATS - Patrick Bureau)]

one comment in here, I do not beleive (and I could be wrong here) that you
can interchange the cranks like that (size of the cranks are different I
beleive)... if yoiu wantto use a 3a 2L and turbo it, you need to find some
8:1 3a forged pistons...

ATS - Patrick Bureau - txrocco@sbcglobal.net
----------------------------------------------
MSN:ATSGTX@hotmail.com |YAHOO:ATSGTX@yahoo.com
ICQ:32918816           |AIM:Texasscirocco
----------------------------------------------


=>-----Original Message-----
=>From: scirocco-l-bounces@scirocco.org
=>[mailto:scirocco-l-bounces@scirocco.org]On Behalf Of Jeff Toomasson
=>Sent: Saturday, August 23, 2003 11:21 AM
=>To: Dan Bubb; scirocco-l@scirocco.org
=>Subject: Re: Block interchangability
=>
=>
=>I am familiar with the concept (though I may not have conveyed
=>that from my beer-soaked haze at 12:30am last night!  :p)  but I
=>was also coming at it from the angle (and it was completely an
=>ASSumption) that there was a time and money constraint...I also
=>assumed that Big Mac was having a more difficult time finding a
=>block w/ squirters versus one w/o.
=>
=>Please don't ask how I arrived at those conclusions!  :)
=>
=>I've actually been thinking about this, too, because the JH
=>doesn't have the squirters and is still the chosen block for my
=>turbo engine (because I already have a working one in my possession).
=>
=>Now I'm toying with the idea of going with a 3A using a JH crank
=>to keep the lower compression. Displacement gets bumped up to
=>somewhere in the neighborhood of 1850cc...No idea about the
=>feasibility of this yet though...
=>
=>Isn't this oil gallery the same thing as the "rifle drilling"?
=>If so, I believe Larry had floated a picture of this a few months
=>back during that arguement...
=>
=>Hope you're enjoying your weekend!  L8R,  JT
=>
=>
=>Dan Bubb <jdbubb@ix.netcom.com> wrote:
=>The purpose of the oil squirters is to cool the underside of the
=>piston directly and thereby help heat transfer from the crown of
=>the piston. A cooler crown is a stronger crown.
=>couple thoughts:
=>1. If you think about it the heat path out of the piston crown
=>(where all of the heat is input) is a pretty torturous one. Alot
=>of the heat actually goes out through the top ring and the rest
=>goes out through contact between the piston skirt and cylinder.
=>With a high performance engine and especially with a turbo you
=>can put heat into the piston faster than this crummy heat path
=>can get it out. So, the oil squirter is a way to cool the piston
=>crown directly. As a note; the Formula 1 turbo engines of the
=>mid-80's had an "oil gallery" piston. I don't know what it looks
=>like but sounds like they actually ran the oil around a gallery
=>for maximum heat transfer instead of just shooting it at the bottom.
=>2.. Cooler piston crown=cooler combustion chamber=less likely to
=>detonate???
=>3. Even though the GRM events are pretty short duration, with a
=>high HP turbo engine you can heat up the piston so fast that it's
=>possible to blow it in the course of a 1/4 mile run. Lots of drag
=>racers manage this. VW may have installed the squirters mainly
=>for durability i.e. the piston will just last longer if it always
=>runs cooler, and perhaps to lower piston temps for the
=>comparitivily high CR of the day, but here we're primarily
=>interested in durability in the sense of the piston lasting thru
=>a short race with really high heat input.
=>Make any sense??
=>Dan
=>
=>
=>----- Original Message -----
=>From: Jeff Toomasson
=>To: Brian McGarvey ; Dan Bubb
=>Cc: GRM Skateboard Racing -- Allyn ; Brian Haygood ;
=>scirocco-l@scirocco.org ; Rick Alexander ; Brett Van Sprewenburg
=>; Scott F. Williams ; Ron Pieper
=>Sent: Saturday, August 23, 2003 3:55 AM
=>Subject: Re: Block interchangability
=>
=>
=>'scuse me if I inject a little ignorance here, but why are you so
=>hot to have a block with oil squirters?
=>
=>The reason I ask is that you're building this guy for GRM - which
=>is a small series of races? (this is the part I'm unclear of...)
=>
=>If the intended purpose of this motor is for a limited duration
=>of use (i.e., one-two-time competition) and you're not looking
=>for durability, how would having the oil squirters make much of a
=>difference over the course of your intended use?
=>
=>Just trying to truly define the value of the oil-squirter-deal....
=>
=>Jeff
=>
=>Brian McGarvey
=>wrote:
=>THose are the kind of things that we can do.
=>
=>Ooooh BTW I need a little advice...
=>
=>Turbo choice
=>T3/T4 hybrid $300-500 various trims
=>K24 $100 (stock UrQ turbo)
=>K26 $100 (audi 10vT)
=>
=>any suggestions.
=>
=>and regarding the squirters etc. is there anything fancy that we have to
=>do?
=>brian
=>
=>
=>On Mon, 18 Aug 2003, Dan Bubb wrote:
=>
=>> >From the table Allyn listed it looks like all will work.
=>> But, doesn't the G60 have oil squirters for the pistons? And if you're
=>> aiming for big power that means lots of boost, so you really want the
=>> squirters. Means you'd need to put all the goodies into a 16V block.
=>> Dan
=>> ----- Original Message -----
=>> From: "Brian McGarvey"
=>> To: "GRM Skateboard Racing -- Allyn" ; "bigmac"
=>> ; "Brett Van Sprewenburg" ; "Brian
=>> Haygood" ; "Dan Bubb" ; "Rick
=>> Alexander" ; "Ron Pieper" ;
=>> "Scott F. Williams"
=>> Cc:
=>> Sent: Sunday, August 17, 2003 11:34 PM
=>> Subject: Block interchangability
=>>
=>>
=>> > Hey ya'll
=>> > This is a GRM cheapass question..
=>> > the G60 block i got is prolly crap, but the pistons, rods,
=>and crank are
=>> > prolly salvagable. So my question is
=>> >
=>> > if i get one of the readily available, 1.8L 16v or 8v blocks that are
=>> > often available free or very cheap, can I swap the crank, rods, and
=>> > pistons into the block? Cheapass Racing wants to know...
=>> >
=>> >
=>> >
=>> > --
=>> > -------------------------------------------------------------
=>> > Brian
=>> > 88 16v $2004 GRM challenge car http://www.grmotorsports.com
=>> > 84 0v Next years car got parts?
=>> > 82 2.0L Topless bunny -- Knock Ignition and bigger clutch. next.
=>> > 90 90q20v doing daily driver duty.
=>> > 91 VFR750F everybody needs a 11-12 sec vehicle.
=>> >
=>> > Contact method. Email me for AIM, ICQ, YahooIM, IRC, etc.
=>> > -------------------------------------------------------------
=>> >
=>> >
=>> > _______________________________________________
=>> > Scirocco-l mailing list
=>> > Scirocco-l@scirocco.org
=>> > http://neubayern.net/mailman/listinfo/scirocco-l
=>>
=>>
=>
=>--
=>-------------------------------------------------------------
=>Brian
=>88 16v $2003 GRM challenge car http://www.grmotorsports.com
=>84 0v Next years car got parts?
=>82 2.0L Topless bunny -- Knock Ignition and bigger clutch. next.
=>90 90q20v doing daily driver duty.
=>91 VFR750F everybody needs a 11-12 sec vehicle.
=>
=>Contact method. Email me for AIM, ICQ, YahooIM, IRC, etc.
=>-------------------------------------------------------------
=>
=>
=>_______________________________________________
=>Scirocco-l mailing list
=>Scirocco-l@scirocco.org
=>http://neubayern.net/mailman/listinfo/scirocco-l
=>
=>
=>------------------------------------------------------------------
=>------------
=>Do you Yahoo!?
=>Yahoo! SiteBuilder - Free, easy-to-use web site design software
=>_______________________________________________
=>Scirocco-l mailing list
=>Scirocco-l@scirocco.org
=>http://neubayern.net/mailman/listinfo/scirocco-l
=>
=>---------------------------------
=>Do you Yahoo!?
=>Yahoo! SiteBuilder - Free, easy-to-use web site design software
=>_______________________________________________
=>Scirocco-l mailing list
=>Scirocco-l@scirocco.org
=>http://neubayern.net/mailman/listinfo/scirocco-l