itiejim Posted December 17, 2008 Posted December 17, 2008 Anyone seen these? http://cgi.ebay.co.uk/conrods-Triumph-Spitfire-1500-GT6-TR6-bielle_W0QQitemZ350101216430QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item350101216430&_trksid=p3911.c0.m14&_trkparms=72%3A1301%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318 They certainly look well priced, anyone brave enough to buy some and see what they're like :
DaveNotSoSideways Posted December 17, 2008 Posted December 17, 2008 Chinese huh. Land of slave labour and cheap production! Direct from manufactoring base I imagine. What can you say. Maybe ask for a weight, they look meaty.BIG bolts and lots of extra material that could be slung off. Check the feedback in a few weeks?! Certainly cheap. You pay 198UKP+VAT EACH for Carillo rods in the UK. GT is designing some Titanium ones atm, almost ready for production. These have been designed to go down the bore and make a 2.4 on a new crank; from a 2000cc engine! I didn't get all the details on this. Probably under 1/2 the weight of steel, but as ever, not cheap for this stuff. Awesome potential though in a "racer".
JohnD Posted December 17, 2008 Posted December 17, 2008 The eBay guy sells the same design for dozens of modern cars. Inc Ferrari 308! If yu want others experinece, try posting on sites that deal with those cars? John
tim_trinda Posted December 18, 2008 Posted December 18, 2008 They certainly look well priced, anyone brave enough to buy some and see what they're like : Tempted but the auction is only for 4 rods.
spitNL Posted December 18, 2008 Posted December 18, 2008 I have heard good things about these: http://www.pauter.com/exotica.htm $860/562pounds for 4 $1290/843 pounds for 6 So more expensive than the ebay ones but cheaper than carillo.
DaveNotSoSideways Posted December 18, 2008 Posted December 18, 2008 Check the last thread in the Saloon section.
DaveNotSoSideways Posted December 18, 2008 Posted December 18, 2008 Suprised these companies haven't got into "cracked rods"... Modern engines now come with 1 piece rods that have been "cracked" to make the end cap. Basically just snapped off. Basically instead of a smooth area between the cap and body and a retaining tube etc the rods are "cracked" in half. This gives a PERFECT immobile, fret free connection that cannot "wriggle"...Why cause if you crack something it will fit back together perfectly and give a MUCH stronger joint than a conventional compression joint also a MUCH greater effective surface area on the connection and improved strength...against/opposed to OLD school methods of a smooth compression jointing with some form of tube for location.. Stock production on Modern Fords etc.
willcolumbine Posted December 18, 2008 Posted December 18, 2008 Just crack 'em and stick 'em together with JB Weld. Job done! ;D
Nick Jones Posted December 18, 2008 Posted December 18, 2008 Suprised these companies haven't got into "cracked rods"... Modern engines now come with 1 piece rods that have been "cracked" to make the end cap. Basically just snapped off. Basically instead of a smooth area between the cap and body and a retaining tube etc the rods are "cracked" in half. This gives a PERFECT immobile, fret free connection that cannot "wriggle"...Why cause if you crack something it will fit back together perfectly and give a MUCH stronger joint that a convension compression joint also a MUCH greater effective surface area on the connection and improved strength...against/opposed to OLD school methods of a smooth compression jointing with some form of tube for location.. Stock production on Modern Fords etc. Hmmm, powder forging...... interesting process, but is it really strong enough for the top line high strength stuff? Nick
DaveNotSoSideways Posted December 18, 2008 Posted December 18, 2008 I was studying a Ford rod down the engineering shop yesterday, I don't doubt it's as good as any other OE rod, same stuff? Just "cracked" ;D
Nick Jones Posted December 18, 2008 Posted December 18, 2008 I'm not sure how many manufacturers powder-forge (sinter) their rods. Toyota have been for some time (earlys 80's). THis is quite interesting (ads are irritating though) http://www.allbusiness.com/professional-scientific/scientific-research-development/155655-1.html and this http://www.epma.com/rv_pm/PM%20Process/PM%20PROCESS%20HOMEPAGE.htm and this http://www.gknsintermetals.com/images/con_rods.pdf It seems that the answer is 'lots' or even 'most'. I think the reason that the specialists like Carillo etc don't do this is a0. the powder forging kit is a serious investment and . Ford have patented the cracking process. (Although b is odd as I think I remember seeing a video at school in the early 80s about powder forging which even mentioned cracking things, albeit not with rods....) Nick
DaveNotSoSideways Posted December 18, 2008 Posted December 18, 2008 Ya's learn's summink everyday dun ya ;D
Nick Jones Posted December 18, 2008 Posted December 18, 2008 Ya's learn's summink everyday dun ya ;D Everyday's a school day ;D Nick
GT6 Mike Posted December 22, 2008 Posted December 22, 2008 Anyone know the weight of a standard rod without bolts, I am told these are 506g
GT Posted December 22, 2008 Posted December 22, 2008 People could be in for a shock. They probably don't fit down the bore. It's extremely difficult to make a small rod that goes down a bore as small as 75mm, that's why they split them at 45 deg originally. Same problem on the IMP motor
GT6 Mike Posted December 22, 2008 Posted December 22, 2008 That wouldn't be right, somebody selling something that doesn't fit Joking aside, I would like to think they have done some trial fitting. Regarding weights, I found the weights for the rods fitted to my engine, they are 670g so quite a good saving at 506g (if they fit). Think standard rods must be around the 700g mark. (Edit just read in Saloon section AT has them at 685g)
GT Posted December 22, 2008 Posted December 22, 2008 Having already seen a few steel rods, probably our friend Steve has it right. PAUTER would be a co that goes to the trouble of ensuring they fit. Seeing as that guy on ebay is selling rods like "one size fits all" for any make of car, I doubt very much he went to the trouble of checking they fit. The big problem is;- if you fit a large bolt, then logically with that size of journal, and proper design THEY WON'T FIT, because quite simply there isn't room.....unless of course you bore it out to 80 like I did. Even then it's a REALLY tight fit for a large bolt type rod. Obviously I looked into this before adopting a different solution.
DaveNotSoSideways Posted December 22, 2008 Posted December 22, 2008 Like they have a Triumph engine in China lol ;)
GT6 Mike Posted December 22, 2008 Posted December 22, 2008 I have asked them if they will send a part over for trial fitting, I'll keep you informed.
Nick Jones Posted December 22, 2008 Posted December 22, 2008 I have asked them if they will send a part over for trial fitting, I'll keep you informed. That would be interesting - pehaps you can get it PMI'd as well and we can see what kind of monkey metals they're making them from too... Nick
DaveNotSoSideways Posted December 22, 2008 Posted December 22, 2008 Lets all ask for one, we could get a free set? ;)
Nick Jones Posted December 22, 2008 Posted December 22, 2008 Lets all ask for one, we could get a free set? ;) Then we'd have to fight over whose car got them : other than that it's a fine plan Nick
DaveNotSoSideways Posted December 22, 2008 Posted December 22, 2008 Maybe we could make a "sideways forum" engine, and dyno it to death
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