11-30-2020, 06:07 AM | #67 | |
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Send through photos of both sides of the bottom of the cylinder walls, once you have confirmed. realistically, you want more than just 1-5mm of clearance, when the engine warms up, parts expand so if you don't have notching and the Max Speeding Rods aren't as wide as the CP's and your result is 1-5mm of clearance between the rod and the bottom of the cylinder wall currently. then that will quickly reduce to 0 once those rods expand from heat, really the notching should allow for about 10mm of clearance when the motor is up to temp. |
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11-30-2020, 07:22 PM | #69 |
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12-01-2020, 08:31 AM | #70 |
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Thanks !! I’m picking up a parts only motor to finish building this block, then do a quick engine swap. The main concern I have is the turbo manifold. I can either add an external wastegate to the stock turbo manifold upgraded to a mambatek turbo, or get an n55 stock turbo. I would just get the n55 turbo cut and welded to the n20 manifold, then upgrade that turbo.
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12-01-2020, 11:09 PM | #72 |
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Question about building engine like this: forged internals are strong no doubt but won't the engine housing block be the bottle neck then? Making that much power won't break the housing?
Also is the transmission driveshaft etc able to withstand that much torque? |
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12-02-2020, 07:29 PM | #73 | |
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I also used cast iron cylinder liners to strengthen the block. I'm not going to run a lot of boost, about 20-22 psi max on the turbo, and 13-15 psi on the supercharger. I think the transmission should handle it, but I guess we're going to find out |
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12-02-2020, 09:22 PM | #74 | ||
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12-02-2020, 10:22 PM | #75 |
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from what I've read it all depends on your setup, if you run a big turbo that moves the torque curve in the upper revolutions then the engine should hold up to 400whp. However if you run a turbo that produces a lot of torque at low rpm's then the rod bolts would stretch and grenade your engine at around like 320-350 whp. Again that's what I've read so I'm just taking precautions since I'm going for 650-750 whp.
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12-02-2020, 10:33 PM | #76 | |
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Holy moly I've heard of tuned M133 putting down 500 but yours is a different animal. Jesus. How's the project going now? Transmission wise I been told my 240i can handle up to 600whp. |
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12-03-2020, 12:44 AM | #77 |
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I'm pretty sure I've seen dyno's of the b58 putting down more than 600whp. The supra has the the same engine and transmission and they put down over 700whp.
Last edited by Kel918; 12-03-2020 at 06:52 AM.. |
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12-03-2020, 08:58 AM | #78 |
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oh yeah no doubt. this FB dude put down 800whp that finally bombed his transmission. but i wont say all trannys out there can hold up to 800 tho.
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12-03-2020, 12:04 PM | #79 | |
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It would be kind of interesting to see if the 8hp70 (330d & 335d F30) rated at 700nm, would be a direct swap into other F30s with just some coding. just out of pure curiosity, I can't imagine myself ever dropping enough money to make that kind of power also good work so far Kel, thanks for the info and looking forward to your progress |
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12-03-2020, 12:40 PM | #80 | |||
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Replacing internals with sleeves I wouldn't see why 1000hp couldn't by possible for the block itself. Fueling we have support to pretty close to that with upgraded LPFP/HPFP and port injection as a supplement. Really truly, and. Realistically we should hit drivetrain limits before engine block limits. Not sure what the Getrag holds power wise for the 6MT crowd (simulator trans to e90 n52/n55 f30) or what the auto trans actually holds. Also big turbo limits are here as with a stage 2 turbo you're looking around 400whp +/- for off the shelf offerings for n20. Anything more than that will require a custom manifold at the moment.
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MY13: TTE400 Stage 2 turbo, Spec Single Mass flywheel + Stage 3+ Clutch, FTP V2 Turbo Inlet, Evolution Racewerks Charge pipe + Boost pipe + Intercooler, Turbosmart Recirculating Diverter Valve, aFE grill scoop + aFE Magnum Force Cold Air Intake, B58 coil retrofit, eBay Downpipe, Active Autowerke muffler, DW400 LPFP, B58TU HPFP, M5 s63TU injectors, Bimmermilvs, e80 tune by Navardi Tuned. 380 whp/360 wheel torque stock block
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12-03-2020, 04:33 PM | #81 | |
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Thanks !! |
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12-03-2020, 04:52 PM | #82 |
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12-03-2020, 09:57 PM | #83 |
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the bmw is my daily driver, I have 2 other cars that I use for going out and other things. The parts only engine got dropped off today. I'm going to start taking it apart and getting things checked out. For the steering the obx racing strut bar helped out.
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12-04-2020, 12:33 PM | #84 |
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I'm thinking of going with is garret gt-r chra and have it ported to our stock turbocharger exhaust turbine. Navardi do you think it's possible if I go with a bigger compressor housing ?? I’m just wondering if I can use the n55 compressor housing
Last edited by Kel918; 12-04-2020 at 01:33 PM.. |
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12-05-2020, 10:22 AM | #85 | |
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There is alot of reasons why trying to use a mix of garret CHRA and td04 housing or td04 turbine wheel won't work. Simply to many incompatible parts or lack of material/space to machine. Overall best setup is going to be slapping a n55 stock turbo on, or stay with a stage 2 N20 turbo. Although given your power goals etc. N55 stock turbo and turbine housing is going to be better overall option for you. It'll flow more air, and the turbine housing won't be restrictive, it'll also mate up with the n20 DP etc, with the DV and outlet only requiring some modifications and the inlet mounting bracket. BTW as sqwinny said, yeah block with sleeves, right head studs and main studs and closed deck should be more than capable of 1000hp, cranks are forged and ready to go. Its just everything else attached to it. If you break a n20 drive shaft etc just upgrade/convert to N55 related components since they're beefier. For example N55 drive shaft on F22 2 series for example is 6mm larger than the N20 28i version. |
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12-05-2020, 02:26 PM | #86 |
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pics of the parts engine I picked up. I plan to use the stock intake manifold as the basis towards making a custom manifold with fuel rails for port injection. Also plan on using the stock turbocharger to see what are the biggest chra's I can fit in it. The last thing is to take hpfp apart and try to figure what can be done to upgrade it or to send it out to a company that sells upgraded hpfp pumps to upgrade our stock hpfp.
Last edited by Kel918; 12-05-2020 at 02:36 PM.. |
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12-05-2020, 05:31 PM | #87 | |
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http://spoolperformance.us/index.php...product_id=105 |
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12-05-2020, 06:29 PM | #88 | |
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