 | Home > Puma (Tdci) > Blueprinting the TDCi engine |
 
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| 90 Dreamer Member Since: 13 Jul 2019 Location: Oop North Posts: 2052   
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Blueprinting is simply the process of ensuring all tolerances are matched (rather than being at either end of the useable scale), matching piston weights, etc
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11th Dec 2019 9:10pm |
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| Joe the Plumber Member Since: 18 Dec 2013 Location: Midlands Posts: 907 
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Correct. Has anyone had this done to their TDCi?
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11th Dec 2019 9:16pm |
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| 90 Dreamer Member Since: 13 Jul 2019 Location: Oop North Posts: 2052
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If it was a race car / bike limited by the regulations to std parts then i can see the point - for a road car then personally the costs involved wouldn't justify the gains
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11th Dec 2019 10:11pm |
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| Harry.O Member Since: 25 Jul 2014 Location: Warwickshire Posts: 705 
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From memory, Ian at IRB did a blueprinted 300Tdi a few years ago and it showed impressive gains, it may be worth asking him? 2005 Td5 110 Hardtop
1989 300Tdi 90 Soft top 1992 200Tdi 90 Truck cab with Land Cruiser axles |
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12th Dec 2019 9:57am |
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| Grenadier Member Since: 23 Jul 2014 Location: The foot of Mont Blanc... Posts: 5765  
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Is there much point blueprinting an agricultural tdci engine for road use, rather than simply remapping? I can understand on a higher-tuned bike engine (just) or a track-weapon, but a Defender? That could be a bundle of cash, when a remap by BAS/Alive etc might achieve the same gains....just wondering.
Eidt: Sorry, just noticed Dreamer said the same thing.  Monsieur Le Grenadier
I've not been everywhere, but it's on my list..... 2011 Puma 110DC - Corris Grey |
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12th Dec 2019 10:10am |
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| Joe the Plumber Member Since: 18 Dec 2013 Location: Midlands Posts: 907
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Thanks. My bike was done by a chap called Tony Scott who died a year or two back. He was legendary in Honda circles. The inside of the ports was a wonder to behold (no polishing - he said that was useless) just perfectly matched and completely smooth.
I've no idea if it would be worth it in 'our' engines and don't intend to go down that route anyway, but I just wondered if anyone already had. |
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12th Dec 2019 10:13am |
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| Joe the Plumber Member Since: 18 Dec 2013 Location: Midlands Posts: 907
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Ah, but if you've already got the BAS tune and all the other bits, and still want more, that's why the thought occurred to me.
To be honest, my next step is Pete's uprated turbo, but I still need to change a few more tap washers before I can get that done! |
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12th Dec 2019 10:30am |
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| 90 Dreamer Member Since: 13 Jul 2019 Location: Oop North Posts: 2052
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Tony Scott was a legend but he was working under very restrictive race regulations for the classes he aimed at
it involved him holding massive amount of components so they could be 'matched' and made into sets of rods, valves, pistons, etc. as well as selecting the 'best' cranks for tolerance, etc when you are not bound by those regs then simply selecting improved / uprated components and then gas flowing heads, exhaust, etc. can see far greater gains |
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12th Dec 2019 10:40am |
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| adafish Member Since: 30 Mar 2009 Location: atherstone Posts: 1376 
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.. CORRECT.....and was in process of TDCi Putting Dreams on Drives at JLR Solihull.. |
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12th Dec 2019 10:41am |
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| Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018 
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To me blueprinting is just taking the tolerances out, porting would be to improve flow and take out sharp edges and the like. Both would be good to do, but probably not cost effective. Cost effective would be remapping. So depends on budget and how far you are prepared to throw money at diminishing returns. Costs soon escalate...
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12th Dec 2019 6:58pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6264  
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I would imagine it's the 'icing on the cake' once all the obvious routes have been explored and suspect it's only worthwhile once you've pushed everthing else to it's limits and by then you'll have already found the weaknesses in the engine so again probably not worth it.
I suspect for the most part blueprinting is only worth while in a naturally aspirated engine to improve air flow. with turbo's up just turn up the boost to increase air flow (well sorta). well that's my take on it anyhow's  |
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12th Dec 2019 9:25pm |
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| lohr500 Member Since: 14 Sep 2014 Location: Skipton Posts: 1285 
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I could be completely wrong, but I suspect that the standard manufacturing tolerances on component clearance, weight and balancing are much tighter in today's engines than they were 20 or 30 years ago.
Getting 100BHP per litre out of an engine reliably and with longevity 30 years ago was something special, but now it's commonplace. So surely internal tolerances and balancing must be better to support this. I'm not sure blueprinting a TDCi engine would yield many benefits for the cost involved. |
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13th Dec 2019 11:57am |
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| Paul1275s Member Since: 21 Apr 2019 Location: East Sussex Posts: 80 
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Maybe something worth doing if the engine was undergoing a complete rebuild anyway but I wouldn’t bother doing it on a good working engine. 2003 Defender 110 TD5 SW
2003 Caterham 7 2006 Mini Cooper GP |
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13th Dec 2019 1:03pm |
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