[Fot] GT6 Connecting rods

Duncan Charlton duncan.charlton54 at gmail.com
Mon Dec 14 13:57:18 MST 2015 

I was told that nitriding causes the surface to expand, so some slight grinding back to spec is necessary.  I had Dennis, my machinist, do the checking on clearances and resize the rod big ends as needed.

Duncan

> On Dec 14, 2015, at 2:21 PM, toodamnfunky at comcast.net wrote:
> 
> Mile High charges 175.00 for nitriding, polishing & straightening but I've found out you HAVE to check your clearances when it comes back.
> jim g
> 
> From: "Duncan Charlton" <duncan.charlton54 at gmail.com>
> To: "Brian Schirano" <bschirano at yahoo.com>
> Cc: "fot" <fot at autox.team.net>
> Sent: Monday, December 14, 2015 12:20:32 PM
> Subject: Re: [Fot] GT6 Connecting rods
> 
> The nitriding cost (via Dennis Murray of Performance Engine Service in Austin, TX) turned out to be $400 (plus $72 shipping), much less than I expected.  Dennis said that was his cost, so perhaps going direct to Mile High Crankshafts in Denver might cost a bit more.  Compared to the cost of a forged crank that seems like a helluva deal for the Ford 1500 pre-crossflow race motor I’m building for the Morgan.
> 
> Duncan
> 
> 
> On Dec 11, 2015, at 8:27 PM, Brian Schirano <bschirano at yahoo.com <mailto:bschirano at yahoo.com>> wrote:
> 
> My crank was nitrided at a local steel treating shop here in Rochester NY then back to machine shop for (re)polishing, (re)tolerancing, balancing
>  
> 26A GT6+, 28 TR6
> Brian Schirano
> 585-305-0349 Cell 
> BSchirano at yahoo.com <mailto:BSchirano at yahoo.com>
> From: Duncan Charlton <duncan.charlton54 at gmail.com <mailto:duncan.charlton54 at gmail.com>>
> To: Greg Blake <gblake58tr3 at icloud.com <mailto:gblake58tr3 at icloud.com>> 
> Cc: Fot <fot at autox.team.net <mailto:fot at autox.team.net>>
> Sent: Friday, December 11, 2015 9:06 PM
> Subject: Re: [Fot] GT6 Connecting rods
> 
> Dennis sent my Ford 1500 crank to a guy in Colorado for nitriding.  He said it would be about $800, including final straightening and grinding to spec (Monday I’ll pick it up and find out what the final cost is).
> 
> Duncan
> 
> 
> > On Dec 11, 2015, at 3:36 PM, Greg Blake <gblake58tr3 at icloud.com <mailto:gblake58tr3 at icloud.com>> wrote:
> > 
> > Sounds like a deal considering what we pay Dennis these days which does not include the nitriding process. 
> > 
> > Can you specify bearing clearances and radius treatment?
> > 
> > Sent from my iPhone
> > 
> >> On Dec 9, 2015, at 9:46 AM, rkramer3 at austin.rr.com <mailto:rkramer3 at austin.rr.com> wrote:
> >> 
> >> Does anyone have experience with APT nitrided cranks? They list a fully race prepped and nitrided 6 cylinder crank at just under a grand.
> >> Bob Kramer
> >> rkramer3 at austin.rr.com <mailto:rkramer3 at austin.rr.com>
> >> 
> >> ---- Brian Schirano <bschirano at yahoo.com <mailto:bschirano at yahoo.com>> wrote: 
> >>> 2 Cents from a modest built GT6 racer (IE 10:1 CR, stock rods, crank, Good GP3 cam, etc).  Russ's comments are dead on - building the car is one expense, racing it is a recurring one and his estimate of $1000 per event is good. So build in margin of safety in the motor (and other components) where you can.
> >>> aluminum flywheel and clutch & PP I went to Ted Shumaker, TSI - TS Imports
> >>> RE the rods - at the time of my first (only) rebuild a couple years ago I couldn't afford carrillos or Pauters, but did spend some long green on nitriding and polishing the crank, balancing everything, and of course the ARP hardware everywhere that counts . My car is NOT a high rev machine, I self limit at 6200 - 6300 RPM and it seems all the straights are uphill so she never redlines there anywise!
> >>> So to me, it can be done, but has to be consistent with the rest of your build. my next build will be a higher CR and hotter cam, so will be upgrading rods, and pistons as well. But the first build was built conservative for longevity.
> >>> Brian 26A GT6+, 28 TR6Brian Schirano
> >>> 585-305-0349 Cell 
> >>> BSchirano at yahoo.com <mailto:BSchirano at yahoo.com>
> >>>    From: Spitfire Racing <spitfire_racing at twcny.rr.com <mailto:spitfire_racing at twcny.rr.com>>
> >>> To: 'Jamie' <tr6driver at yahoo.com <mailto:tr6driver at yahoo.com>>; 'McKearn McKearn' <mckearn2 at gmail.com <mailto:mckearn2 at gmail.com>> 
> >>> Cc: 'FOT list' <fot at autox.team.net <mailto:fot at autox.team.net>>
> >>> Sent: Wednesday, December 9, 2015 8:02 AM
> >>> Subject: Re: [Fot] GT6 Connecting rods
> >>> 
> >>> A properly built and modified race engine represents a mighty investment not
> >>> only of dollars but of time. Is that really where you want to pinch pennies?
> >>> After all, with the exception of pistons and crank that is one of the
> >>> primary components and all it takes is one piece inside an engine to reduce
> >>> all your work and investment to nothing more than scrap metal. One seized
> >>> valve, or substandard bolt even can be a disaster. It doesn't take much.
> >>> Realize all the ancillary invested expenditures that are also at risk like a
> >>> weekend's entry fee you lose in an engine failure; the cost of time off from
> >>> work to go to a race weekend; the cost of food and lodging for the race
> >>> outing and the cost of just getting there. When asked, I usually advise
> >>> folks to figure a race weekend is ~$1000 minimum when you roll all in.
> >>> 
> >>> A number of racers have run Pauter rods as stated before by Bill and these
> >>> do present a less expensive alternative. I had the opportunity to rebuild an
> >>> engine last year with Pauter rods and they were quite substantial and were
> >>> well designed, constructed and balanced. Personally I have seen far too many
> >>> Chinese knock-offs; reproductions (call them what you will), that fail to
> >>> come close to the parts they try to mimic. 
> >>> I suggest you perhaps delay your build until your war chest allows for top
> >>> quality internals. Do it once and do it right the first time and reduce the
> >>> potential for disappointing expensive disaster.
> >>> 
> >>> Russ Moore
> >>> Spitfire #49
> >>> 
> >>> -----Original Message-----
> >>> From: Fot [mailto:fot-bounces at autox.team.net <mailto:fot-bounces at autox.team.net>] On Behalf Of Jamie
> >>> Sent: Wednesday, December 09, 2015 6:22 AM
> >>> To: McKearn McKearn
> >>> Cc: FOT list
> >>> Subject: Re: [Fot] GT6 Connecting rods
> >>> 
> >>> Although I was initially very wary, they have worked well for over 1,000
> >>> race miles in our (horror) MGB engine.
> >>> 
> >>> Jamie Palmer
> >>> 
> >>> 
> >>>> On Dec 8, 2015, at 11:52 PM, McKearn McKearn <mckearn2 at gmail.com <mailto:mckearn2 at gmail.com>> wrote:
> >>>> 
> >>>> Hi Gents.
> >>>>    I am looking for feedback on the MaxSpeeding connecting rods for GT6.
> >>> Can't afford Carrillos and I'm hoping these are good. Also am still
> >>> searching for an aluminum flywheel without having something custom made. and
> >>> would like input on what type of clutch to use as well . Lets call it a race
> >>> car for the sake of argument....
> >>>>                                Thanks.  P.J.
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