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DTR - Project Recommission 1972 'Dolomite' Manual http://forum.triumphdolomite.co.uk/viewtopic.php?t=32879 |
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Author: | James467 [ Wed Feb 07, 2018 10:53 am ] |
Post subject: | Re: DTR - Project Recommission 1972 'Dolomite' Manual |
Thanks, have PM'd you Dave, I may have a front section coming to Stoneleigh, will keep you updated. Engine update.... Needs a rebore, no1 cylinder has a lip. But thanks to Bruce I have a set of +20 Hepolite pistons, just dropped them off to Mick at Roe Engineering. It's going o be a couple of weeks though. Head will go over on Monday for new guides, valves and seats plus probably a skim or face. Still debating about balancing it. It's only a road engine, for £160 is it worth it? Hmmm? In the meantime I have plenty of body work to be getting on with for the NEC. |
Author: | SprintMWU773V [ Wed Feb 07, 2018 11:23 am ] |
Post subject: | Re: DTR - Project Recommission 1972 'Dolomite' Manual |
It's probably worth having things balanced as it will help to ensure the engine is smooth and reliable. I don't think you need to go down weighing the rods etc but crank, clutch and pulley perhaps. Not that they would have been balanced out of the factory of course. On the other hand you could spend the £160 on something else. What were the big and and main bearings like? Does the crank need a grind? |
Author: | James467 [ Wed Feb 07, 2018 11:31 am ] |
Post subject: | Re: DTR - Project Recommission 1972 'Dolomite' Manual |
I'm kind of with you with the balancing Mark, I'll do the pistons and rods as well as I have the kit to do it and it doesn't take me long at all. At the end of the day, yes I am thinking of the final value of the car (I am not ashamed to admit that) and a rebuilt engine fully balanced will add not only value but desirability. You all know I have very high standards and don't shortcut anything. The crank shouldn't need a grind, just a polish. I'll let Mick and Leon have a look at it when I drop everything in on Monday. |
Author: | DOLOMITE 135 [ Wed Feb 07, 2018 12:01 pm ] |
Post subject: | Re: DTR - Project Recommission 1972 'Dolomite' Manual |
Quote: It's probably worth having things balanced as it will help to ensure the engine is smooth and reliable. I don't think you need to go down weighing the rods etc but crank, clutch and pulley perhaps. Not that they would have been balanced out of the factory of course.
To clarify, are you referring to the engines not being balanced at all, the individual parts only being balanced as required, or that the crank, clutch, and pulley were not balanced as an assembly at the factory?
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Author: | SprintMWU773V [ Wed Feb 07, 2018 12:18 pm ] |
Post subject: | Re: DTR - Project Recommission 1972 'Dolomite' Manual |
Certainly the rods, pistons etc would not have been balanced in the factory and I doubt the crank was either, or at least not every one. I also doubt that the assembly of crank, clutch and pulley was balanced. All of this would take too long and the hope would have been that the manufacturing tolerances were sufficient to ensure a reasonable quality of build. You only really get into balancing when you're blueprinting an engine or you're selling a vehicle of sufficient worth to justify the extra time and cost. BL were more concerned with getting cars out the factory gates rather than ensuring very car was as good as it could be. |
Author: | soe8m [ Thu Feb 08, 2018 6:18 pm ] |
Post subject: | Re: DTR - Project Recommission 1972 'Dolomite' Manual |
It would be stupid not to balance and roughly check the rods first. You can have 30 grammes difference in rods in one engine. You can't match that but have to replace by one of about the same weight. When you hear an engine running and think by yourself that one runs nice, that are the ones put together with more care and balanced rotating parts. Jeroen. |
Author: | James467 [ Thu Feb 08, 2018 6:39 pm ] |
Post subject: | Re: DTR - Project Recommission 1972 'Dolomite' Manual |
I agree, there is also that 'could have been' factor as well. I'll always be wondering if the engine would have been better if it were properly balanced. Plus I feel like I'm doing a proper job by getting it balanced. |
Author: | MIG Wielder [ Thu Feb 08, 2018 9:40 pm ] |
Post subject: | Re: DTR - Project Recommission 1972 'Dolomite' Manual |
Quote: Still debating about balancing it. It's only a road engine, for £160 is it worth it? Hmmm? Highly recommended here ! Tony. |
Author: | Carledo [ Thu Feb 08, 2018 11:25 pm ] |
Post subject: | Re: DTR - Project Recommission 1972 'Dolomite' Manual |
I won't build an engine for one of my own cars without balancing it, most of my customers are very cost conscious (read "tight") so rarely opt for it. But, like you, I have that nagging voice that says "you could have done this better, but instead you saved a few quid" Since I like to do a job once and never again, balancing or blueprinting is a no brainer for me. Not only does it run better and use more of it's potential, it will last longer and accept more abuse too! that's what I call win/win! Steve |
Author: | James467 [ Fri Feb 09, 2018 9:31 am ] |
Post subject: | Re: DTR - Project Recommission 1972 'Dolomite' Manual |
If I ever needed an excuse to get the rod balancer out again! Right, it's being done! Had to order a clutch though, everything will get dropped off on Monday. The only thing I am worried about is time. I need the engine and head back by w/c 12th March so I can build it. I may have to send some beer over or offer to lend a hand at the weekends! |
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