02-14-2024, 05:32 AM | #1 |
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Advice on forged rods, pistons etc
I have a 2103 Comp with 80k kms under its belt. Mods are CSF charge coolers, PG intakes, downpipes, rear diff brace, XHP gearbox tune and BPM stage 2 tune. The car is in very good shape and has been meticulously maintained by me over the years.
I have no plans to sell the car in the foreseeable future and good sense dictates that I reinforce the bottom end to avoid bending a rod or melting a piston. I am way out of my depth in this area and would appreciate some input on the available and most viable options from those who have already gone this route. Alternatively, perhaps someone can recommend a reliable vendor to whom I can address my queries. I am considering Carrillo rods and pistons, and my research indicates that I should be looking at the following options: 1) CP Forged Piston Set, BMW S63 Alusil, Pro-Xtreme (CP-FPS-S63-XT) 2) CP-Carrillo Connecting Rod Set, BMW N63/S63 Pro-Xtreme (CAR-CRS-S63-XTT) Is my thinking correct? Regarding the Pistons: - As we are not altering the stock bore, do I opt for the 89 mm bore size (which i assume is the standard bore size) rather than the 89.25mm bore size pistons? - I see that there are several options on compression ratio, namely 9.5:1, 10:1, 10.5:1 and 11:1. If I do not plan to run more than 26 psi of boost, do I stick with the stock compression ratio and, if so, what is that ratio? - Is it advisable to go with the heavy-duty wrist pin? Regarding the rods: - I see that tapered and non-tapered are options. I gather that tapered is compatible with the OEM piston while non-tapered is not. Is tapered also compatible with the CP piston referred to above? If not, then obviously I must order non-tapered. However, if compatible, then would it not make sense to order tapered to accommodate me in the unlikely event that at some point in the future I need to substitute the CP Pistons with OEM pistons? Is it advisable to also get the ARP Head Stud Kit, (BMW S63ARP-HSK-S63-S)? Should I fit a new oil pump? Any other advice / suggestions? Last edited by ajm55; 02-14-2024 at 08:19 AM.. |
02-16-2024, 10:37 PM | #2 |
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Glad to hear ya have long-erm ownership goal for the car. I am headed off to bed but read your post and wanted to see if you know of the folks at https://5150autosport.com/.
I was working with them on forged parts list for my car right before I blew mine up and needed a new engine. They were very friendly, very informative and were very price competitive. Give em a call or email. Yes do a new pump and consider using the F90 if you can.
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2015 F06 M6 Silverstone Metallic II, Individual Full Leather, B&O, Night Vis, CCB, RKAutowerks (CP Rods/Pistons, DI Cams, CF Intakes, Coated DP's & Billet Diff Brace), InfinityAuto Turbo Inlets, Mishi Oil Cooler, JB4, XHP S3, BM S3
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02-17-2024, 01:39 PM | #3 |
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I just went through the same math and decided on going forged connecting rods along with upgraded pistons and bearings. The rods are CP Carrillo and the pistons are 5150 AutoSpa. Can’t comment on anything else as I’m only 1500 miles in. So far so good.
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02-18-2024, 12:27 AM | #4 |
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My engine builder used the following forged internals for my upgrade S63:
FCP Engineering rods JE coated pistons with reduced compression ARP bolts King main and rod bearings GTR steel sleeves |
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02-18-2024, 01:21 AM | #5 | |
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Quote:
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02-18-2024, 01:23 AM | #6 |
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Nice! Hope it works out as planned. Did you go with stock compression?
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02-18-2024, 01:25 AM | #7 |
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Awesome. Looks like it's built for loads of torque. Did you replace the oil pump with new?
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02-18-2024, 02:04 AM | #8 |
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02-18-2024, 02:38 AM | #9 |
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Thanks. I recently replaced my HPFPs with the Bosch F10 pumps. I wanted to fit the F90 HPFP pumps but received so much conflicting feedback about whether doing so would require a re-tune. A retune wasn't viable as I have several tunes for the car, all of which would be rendered useless by fitting the F90 pumps (if the advice that a re-tune would be required, is correct). Did you use the F90 or F10 oil pump?
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02-18-2024, 02:49 AM | #10 | |
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02-18-2024, 05:30 AM | #12 |
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Thanks for the input. Your set-up looks tops.
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