Advice on forged rods, pistons etc

[ajm55]

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?

[TinCanSailor]

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.

[Blaxwil]

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.

[SCD-1983]

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

[ajm55]

Originally Posted by TinCanSailor

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.

Thanks for the feedback. I've made contact with 5150 and am awaiting a response. Did you buy a new engine from BMW or go with a forged rebuild?

[ajm55]

Originally Posted by Blaxwil

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.

Nice! Hope it works out as planned. Did you go with stock compression?

[ajm55]

Originally Posted by SCD-1983

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

Awesome. Looks like it's built for loads of torque. Did you replace the oil pump with new?

[SCD-1983]

Originally Posted by ajm55

Awesome. Looks like it's built for loads of torque. Did you replace the oil pump with new?

Yes, basically all wear parts plus oil and water pump were replaced, since fluid supply is crucial! I also opted for the F90 HPFP, to increase fuel flow.

[ajm55]

Originally Posted by SCD-1983

Yes, basically all wear parts plus oil and water pump were replaced, since fluid supply is crucial! I also opted for the F90 HPFP, to increase fuel flow.

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?

[SCD-1983]

Originally Posted by ajm55

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?

True, there’s conflicting information out there. I listen to my experienced engine specialist and he recommends a tune to utilize the F90 HPFP. He installed a F10 oil and water pump, he uses them in his 1100 hp F13 M6 successfully.

[ajm55]

Originally Posted by SCD-1983

True, there’s conflicting information out there. I listen to my experienced engine specialist and he recommends a tune to utilize the F90 HPFP. He installed a F10 oil and water pump, he uses them in his 1100 hp F13 M6 successfully.

Thanks for the input. Your set-up looks tops.

[ajm55]

Originally Posted by SCD-1983

True, there’s conflicting information out there. I listen to my experienced engine specialist and he recommends a tune to utilize the F90 HPFP. He installed a F10 oil and water pump, he uses them in his 1100 hp F13 M6 successfully.

Thanks for the input. Your set-up looks tops.