The Triumph Dolomite Club - EzBoard Archive

That's a great shot. Why <!--EZCODE ITALIC START--><em>were</em><!--EZCODE ITALIC END--> the minis going the wrong way. <!--EZCODE EMOTICON START :lol --><img src=http://www.ezboard.com/intl/aenglish/im ... /laugh.gif ALT=":lol"><!--EZCODE EMOTICON END--> <br>
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Scott, have you a crankshaft ladder fitted, if not that might help by the sounds of it. I know Ken's got one fitted to his.

<p><!--EZCODE LINK START--><a href="http://www.dolomitesprint.com/" target="top">www.dolomitesprint.com</a><!--EZCODE LINK END--></p><i></i>

Yup, Scott you need one of these ...<br>
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BTW Is a "windage tray" the same as a "crankshaft ladder" the same as a "girdle plate"?

<p><!--EZCODE LINK START--><a href="http://www.triumphowners.com/2">1975 Dolly Sprint</a><!--EZCODE LINK END--></p><i>Edited by: <A HREF=http://p206.ezboard.com/bthetriumphdolo ... edracer</A> at: 17/5/05 4:23 am<br></i>

Yep, that's the one.<br>
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Martin

<p><!--EZCODE LINK START--><a href="http://www.dolomitesprint.com/" target="top">www.dolomitesprint.com</a><!--EZCODE LINK END--></p><i></i>

right-click save as , or open in browser if you're brave.<br>
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<!--EZCODE AUTOLINK START--><a href="http://www.antchip.com/spin.gif">www.an ... <!--EZCODE AUTOLINK END--><br>
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That's great lewis. I might see if I can save that as my Avatar if you don't mind holding it somewhere on your webspace.<br>
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BTW. Jigsaw are going to be sorting it out (the engine) to my satisfaction. The mark of a good company (scuse the pun) is how they deal with problems such as these and I must say they didn't try and avoid taking responsibility even before the engine has been stripped.<br>
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Once that has been done, if the problem is with the bearing on number 2, we are going to be doing some heavy research into diffent baffled sump designs on sprints, ladders and oil pick up positions.<br>
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I like this<!--EZCODE EMOTICON START :D --><img src=http://www.ezboard.com/intl/aenglish/im ... /happy.gif ALT=":D"><!--EZCODE EMOTICON END--> <br>
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...the way the white one locks up! White with stripe after that I'll be bound!<br>
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Were you just showing off that you had time to run rings around them?

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It suprised me how quick they can be, even on the straights.

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Scott,<br>
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Just a couple of thoughts on your motor problems. We are great beleivers in using thick oil. I know that it does create some extra load/drag, but engine reliablity is very important. Admittently we would generally be competing in higher ambiant tempertures, but we use Penrite HPR40 oil which is 25w/70 grade.<br>
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I would be surprised if you are not already using a Nitrided crankshaft, but since we started using nitrided cranks, we have virtually eliminated all bearig problems with our motors.<br>
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Good Luck and hope all is sorted ASAP.<br>
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Mark

<p><!--EZCODE LINK START--><a href="http://www.sprintparts.triumphowners.com">SPRINTPARTS</a><!--EZCODE LINK END--></p><i></i>

I'm using Penrite 20/60 so fairly similar.<br>
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The first crank was Nitrided. The 2nd one wasn't as it was a crank that I had sourced and had already been reground. On both occasions lead/copper vandervell's were used.<br>
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We are going to take the engine to a guy based in Silverstone who used to build Broadspeed Sprint engines to pick his brains and see if there is something fundamentally wrong that could be causing such a failure.<br>
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Have you heard of the little bearings inside the cross drillings of the crank dropping out? Ken Clarke told me that he knocks his out and puts a grub type screw in place as he had a failure caused by the above.<br>
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We don,t use cross drilled cranks. When Philip purchased his race car some 20 plus years ago, amongst some of the supplied information was engine build "spec" information. In this information it stated that if you used a cross drilled crank, ensure that the cross drilling was blanked off.<br>
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I don't remember the history/background of these notes, but I think that it may have originally be supplied from Broadspeed, as Philip's car is a genuine Broadspeed built car that competed in the 1974 BTCC. <br>
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Based on this information we have only ever used single oil hole (not cross drilled) cranks, which have come from 1850, TR7 or Sprint motors.

<p><!--EZCODE LINK START--><a href="http://www.sprintparts.triumphowners.com">SPRINTPARTS</a><!--EZCODE LINK END--></p><i></i>

That's interesting.<br>
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My technical knowledge is letting me down as normal but I actually was referring to the single oil hole present in standard cranks.<br>
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The ex-racer who I bought the two cranks from had a whole binder full of ORIGINAL broadspeed data from 1975 I think. It included data from Rouse and Dron's cars prior to each race, what they were putting out on the dyno, modifications made and quite a bit of testing data. Who raced in Phillip's car in 74'?<br>
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The Broadspeed information would make interesting reading. Any chance of getting copies and putting them in this website. Re the non cross drilled cranks, my engine uses a Holbay steel crank from a Formula 3 development motor. It is not cross drilled, but is fully counterweighted and extremely hard.<br>
Re the engine oils, I had a lot of problems years ago with overcooling the oil, which was taken care of by fitting a thermostat to the oil cooler line. I think if you are running a heavier grade oil, then you should make sure you warm the engine up fully prior to the race. I have used Castrol RS fully synthetic for the last few years and the engine has clocked up nearly 10000 ks racing with no apparent problems.

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Hi Scott,<br>
Mark normally communicates with all of our mad colleagues in the UK but seeing as to how my car has been mentioned I thought I should reply. I have no details of the car prior to arrival in Australia. It was imported here in 1975, together with a second car, by a local racing identity Ron Hodgson who was also a prominent Leyland dealer. Sadly Ron passed away about 17 years ago and I was never proactive enough to get a history from him prior to his death. If anyone has access to any of the old records the VIN Number is VA3553 (Body No DI35302??). <br>
With regard to the crank drillings I was led to believe the cross drillings were blanked off to prevent oil flowing out the side of the bearings as clearances increased with wear (both the bearings and presumably the oil pump (which in my opinion was never large enough for Sprints or Stags). However the holes that remain in use must be detailed to facilitate the oil flowing around the bearing shells. Whether this is fact or not is hard to determine 30year later, but it has proven itself with our cars. Any bearing failure we have suffered have usually been contributed to another failing- oil pump, excessive clearances in the cam/jackshaft/rocker shaft etc.<br>
Philip

<p><!--EZCODE LINK START--><a href="http://www.sprintparts.triumphowners.com">SPRINTPARTS</a><!--EZCODE LINK END--></p><i></i>

Thanks Philip.<br>
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I'll see what I can do about coaxing the file from him for a couple of weeks. It looked very interesting.<br>
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