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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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b230fk Upgrades?Views : 3230 Replies : 41Users Viewing This Thread : |
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Apr 19th, 2022, 22:52 | #31 | |
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if you put generic chips in you won't need a custom map... i think classicswede sells a 3" downpipe or you will need to get one fabricated,,, Owen Developments do a 19t hybrid especially for this application but its not cheap at 1500 quid but well worth it!! |
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Apr 20th, 2022, 04:09 | #32 | |
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I will mention this now probably a bit late but I like the idea of having a 3 inch downpipe leading into a standard exhaust except for the addition of bypass valves so that it is unsuspecting but when I need good flow I can have it. |
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Apr 20th, 2022, 10:12 | #33 | |
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With custom chips, these are programmed to optimise the specific engine they are running. This can give improved performance and economy without compromising certain things as a safety measure because the engine is capable of withstanding more in a particular parameter than others. That said, until you've built your engine, you won't know whether a custom or generic chip-set will be better for you in the wallet department and performance. Ideally, a custom set is the way to go as it can be tweaked to your individual engine. Despite everything the manufacturers will tell us, all engines are different even though they are built from the same components and tolerances. Are you planning any head work in terms of porting and port-matching? That is usually a good way of (relatively) cheaply releasing power, improving smoothness and economy and provides a good foundation for the other mods you have planned.
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Apr 20th, 2022, 16:08 | #34 | |
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"Just be careful that you use a good quality boost gauge, and don't go over 12 psi on a standard engine - you'll have a very good chance of melting the pistons. For info, this is what I did to my '97 Classic a few years ago - Boost gauge (£35 new, autojumble) MBC spring & ball type (£15 ebay) Running at around 10psi should give you around 190bhp. This is plenty to be honest, but for even more fun... iPD antisway bars (£400 (?), iPD via forum group buy) 531 cylinderhead (£50, ebay) This head has better breathing exhaust ports, is otherwise same as the standard 530 head. Reconditioning and mild reworking cost £400 locally. 'A' pattern camshaft (£35, forum member) very mild upgrade, but useful. 2.5" stainless performance exhaust with competition spec cat (£600 powerflow) BIG improvement in responsiveness and turbo spoolup. Remapped chips (£250, Fredrik on turbobricks forum) Mustang 5 litre V8 injectors (£forgotten, US ebay) Fully synthetic trans fluid (Amsoil) Mobil 1 engine oil Halfords premium coolant K&N panel air filter All the above is prep for running higher boost...and a bigger turbo 15G turbo (£70, ebay) From early 850 T5 car turbo recondition kit (£50, ebay) Running the above at 15psi i reckon i was well on the way to 220-240bhp. It was certainly a monster with wheelspin readily available in any gear except 5th! MPG was down to 18 though - even without thrashing it. If you do decide to do something similar, make sure you get the chips and injectors before going over 12psi - they will provide the extra fuel required to prevent you running excessively lean." He mentions getting a 531 head and paying to have it reconditioned. Do you think this method would be better than having it done to the car's current head? |
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Apr 21st, 2022, 10:17 | #35 |
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My opinion, rather than experience; No. And the prices are much higher for those heads nowadays. I wouldn't even touch the 530 head until I was at the sort of power that requires stronger rods.
I'll reinforce my earlier opinion; a small turbine housing on the turbo will hold it back more than anything else. This is just based on what I've seen people experimenting with in recent years. |
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Apr 21st, 2022, 22:27 | #36 |
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Someone needs to tell all the guys in Sweden running 30+PSI on factory pistons
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Apr 22nd, 2022, 12:13 | #37 |
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The problem going over 12psi is potentially a weak mixture, but I have never found any problems on the track or drag racing going up to the fuel cut limit around 15psi. Even after I had some low compression the problem was not damaged valves, and certainly not melted pistons (seemed to be a damaged HG during assembly). The redblock turbo has a number of cooling measures in the design such as Sodium filled valves and oil squirters.
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May 10th, 2022, 15:54 | #38 | |
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For the clutch kit is this what you're referencing?: https://www.ebay.co.uk/itm/302924068...SABEgJivvD_BwE I'm also looking into getting an lsd, something like this: https://www.shopbhp.com/products/bla...ited-slip-diff I've seen videos of people doing it on youtube but does anybody have any more information about fitting lsds to these bricks? |
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May 10th, 2022, 20:49 | #39 |
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The diff is ok, I have been using them for a while https://www.classicswede.org/shop/bl...40-helical-lsd
You can get the clutch complete with the flywheel and all fixings etc needed https://www.classicswede.org/shop/94...it-with-clutch |
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May 26th, 2022, 14:58 | #40 | |
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