Now if that cast iron 2.87" crank will hold up to 9,000 RPM, that would be a
super motor.
----- Original Message -----
From: "DOUG ODOM" <popms@thegrid.net>
To: "Dave Dahlgren" <ddahlgren@snet.net>
Cc: "Richard Fox" <v4gr@rcn.com>; <land-speed@autox.team.net>
Sent: Tuesday, January 09, 2001 8:04 PM
Subject: Re: Another great idea from the guy that brought you 300 e-mails on
one subject..
> Dave; The 289 was made from 1963 through 1970. 4" bore 2.87"
> stroke. Doug Odom in big ditch
>
> Dave Dahlgren wrote:
> >
> > yeah I know the 289 is real cheap and easy to find... What
> > was the last year they were made?????
> > Dave
> >
> > Richard Fox wrote:
> > >
> > > Dave; At least for the Ford 302 I have a solution. It's called 289. On
my 2
> > > liter lotus and 3 liter Nissan I went to a .005 overbore which was
within
> > > the limits and cleaned up fine. Rich Fox
> > > -----Original Message-----
> > > From: Dave Dahlgren <ddahlgren@snet.net>
> > > To: land-speed@autox.team.net <land-speed@autox.team.net>
> > > Date: Tuesday, January 09, 2001 02:08 PM
> > > Subject: Another great idea from the guy that brought you 300 e-mails
on one
> > > subject..
> > >
> > > >This is long and may beg for the delete key so be warned..
> > > >
> > > >I have another great idea.. I know oh crap not this guy
> > > >again.. But for those who like to race within a reasonable
> > > >budget this will make sense although may be a nightmare for
> > > >the rules guys..
> > > >
> > > >let me start with a couple of assumptions and yes i know how
> > > >to parse the word into it's potential meaning.. seeing how
> > > >this is a coed list will save the definition for another
> > > >time for those that don't know or can e-mail me off list.
> > > >
> > > >1. LSR racing is for the most part a hobby that is done for
> > > >the love of it.
> > > >
> > > >2. if you can find something inexpensive that is fun to
> > > >drive and racey it has potential.
> > > >
> > > >3. better if you can find engines that actually came out of
> > > >something and don't cost a kings ransom then they might
> > > >have some potential even better if many are around in
> > > >salvage yards or they just made a zillion of them and don't
> > > >cost a lot for what you might be able to turn them into. Oh
> > > >this is an engine thing as i am an engine guy and want to
> > > >know little about fenders and such as that is a whole other
> > > >issue.
> > > >
> > > >So here goes with the great idea..
> > > >The problem..
> > > >
> > > >Many of the engine size breaks are right on the same size of
> > > >most commonly produced engines before they become 'used and
> > > >cheap'. the bores are worn out they need pistons crank
> > > >ground etc..
> > > >The current solution..
> > > >
> > > >If you want to build a D engine for instance. 2 engines show
> > > >great promise. A 320 chevy or a 302 FORD( I used caps
> > > >because I like FORDS).. Most of these engines need an
> > > >overbore of .030 or more to clean up the bore and pistons
> > > >are available to .060 over as the blocks for the most part
> > > >have a lot of iron in the walls. It is a cheap fix as
> > > >pistons cost the same from stock to +.060 over.. BUT the
> > > >gottcha is now the engine is too big. The current solution
> > > >is to do 1 of 2 things. Look for a used block that will
> > > >clean with a .010 or 0.020 overbore , buy a new block for
> > > >1000+ or buy a custom crank with a shorter stroke for 2000+
> > > >
> > > >These solutions are either incredibly time consuming or
> > > >expensive. They also apply to most of the small inch stuff
> > > >that is always viewed as 'cheap to race'. Most 2000 cc
> > > >engines are around 1990 cc stock same with 3000cc I am sure
> > > >there are a zillion 1498 cc engines too there are i sure too
> > > >others that are larger that are right on the edge of the
> > > >next class.
> > > >
> > > >A different solution...
> > > >Allow an overbore not to exceed .060 ( that ought to fix the
> > > >worst of the worst engines) so you can run a stock crank and
> > > >save the 2000 or so bucks. For most engines this amounts to
> > > >a few cubic inches. Some one with a calculator handy might
> > > >and i am sure will add to this.
> > > >
> > > >This is personal for me and I won't hide that fact. I have
> > > >no vested interest in the rotary deal i brought up but this
> > > >i do. Keith just mentioned his crank is coming in from
> > > >Bryant. It will be a nice piece i am sure, but an expensive
> > > >one. If he could have bored out the 302 might have not
> > > >needed the crank in the first place or at least not a custom
> > > >stroke one to get under the size limit. I have been looking
> > > >for a 3 liter engine for 2002. None to be found in my book
> > > >because you can't freshen one up for a reasonable cost as
> > > >they are for the most part 2990+ cc stock. If I do no more
> > > >than a service station rebuild i am illegal.. I will grant
> > > >you that most try a little harder than that but the concept
> > > >is the same. There ought to be a way to allow so many cc's
> > > >per cylinder for normal engine rebuilding. I have a 2000 cc
> > > >ford block that is .002 over.. have a lot of time in it and
> > > >it is junk.. just does not seem like it is a reasonable deal
> > > >same with most of the small chevy and FORD guys out there.
> > > >
> > > >So the question is .. Is there anyway top have a bit of a
> > > >window in engine size that precludes spending a ton of money
> > > >to not be a few cubic inches over a set limit????
> > > >
> > > >Doing a little quick math with a 302 FORD as a starting
> > > >point..
> > > >stock is 301.44 with a 4 inch bore 3 inch stroke.
> > > >D class limit is 305
> > > >302 with a .030 overbore .. real common is 306 oops no
> > > >good.. 0.03% over
> > > >
> > > >302 with a .040 overbore less common but safe is 307.5 1.5
> > > >inches 0.09% over
> > > >
> > > >302 with a .060 overbore and probably out of iron in the
> > > >walls..310.55
> > > >So the worst case is less than 2% .. and less than 6
> > > >inches..
> > > >
> > > >The other question is there is 1 cubic inch between classes
> > > >who owns that inch??
> > > >a good example is G class.. up to 2.00 liter F is 2.01 liter
> > > >to 3.0 Where are the 10cc's. I have a FORD 2 liter block
> > > >that will clean at 2008 cc so it is not G or F..
> > > >I was looking at an F engine from another car it is 3 cc
> > > >under 3.0 liter it will clean at 3019 cc another 'black
> > > >hole'.. would clean better at .020 over but that is too big
> > > >for sure but never the less well under the range of FACTORY
> > > >pistons..
> > > >
> > > >Anyone have any great ideas to fix this and help keep the
> > > >cost of racing down??
> > > >
> > > >Just so no one feels left out the FORD examples work for a
> > > >chevy 302 also... :>)
> > > >Dave Dahlgren
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