i have the G260 with close ratio where 4th and 5th same but 1st to 3rd about 5-10% longer
G260 3.83/2.20/1.40/1.00/0.81
G260 CR 3.35/2.03/1.36/1.00/0.81
i find...
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anyone have any intel how the 8041 1289 SPGC compare to the mustangs 8041-1186 SPORT or 8041-1026 SPORT or TC Kline DA 8042-1134 TCK
i'm looking for something optimized for the street and...Leave a comment:
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yes, agreed i haven't ruled out retaining the same spring as I currently am and that the softer spring will likely need a corresponding damper change/adjustment.
These anecdotes are somewhat...👍 1Leave a comment:
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i am trying to run a softer setup if possible or at least refine what i have to be a bit nicer on the really crap country roads in this country as i am not so young anymore.
I currently use...Last edited by digger; 02-19-2026, 01:29 PM.Leave a comment:
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GC Bump stop data
Some may find this interesting.
i got these bumpstops with a 1198 SPGC koni front shocks
I tested this on a valve spring tester with load cell and digital vernier scale.
...Last edited by digger; 02-24-2026, 01:28 PM.☕ 1 -
the bump stop is progressive, whereas the spring is linear until it is solid and it suddenly goes to 20,000,000 lb/in...Leave a comment:
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The damper is supposed to bottom out first on that design but specifically the foam bump stop part not the internal gizzards. You dont want anything to be a hard stop and the coil going solid is not what...Leave a comment:
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Suspension Travel on front coilover
What are people using as a setup free clearance for the front coilover bump stops, as in at ride height what travel before the bump stop makes initial contact? 1", 1.5", 2" ?
...Last edited by digger; 02-15-2026, 06:48 PM. -
Thanks for this, the image on GC website doesn't seem to match anything of these perfectly.
this exploded assembly doesnt seem right either
https://cdn.shopify.com/s/files/1...Last edited by digger; 02-11-2026, 03:59 PM.👍 1Leave a comment:
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blast from the past....i dont have a section view of the design but it looks like the "top hat" failed through punching shear of the annulus circled in red. that isn't made out of cheese and...
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Zaq got sold a febi from the dealer. To me this is dealer skull duggery, most the dealers are not actually "BMW group". i almost never buy OE parts from the dealer as there are plenty of places...Leave a comment:
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i have had to resend a couple times in the past. Can you just call them?...Leave a comment:
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iirc i am using the 90 degree version 34331156579, i dont recall if i have it connected to 1 or 2 cylinders (360 degrees apart). I am using the e90 boosterLeave a comment:
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The BMW spec is 10Nm (do not use the 9-11 lb-ft often stated) and make sure the studs are correct length screwed in sufficiently so there is adequate thread engagement...Leave a comment:
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i haven't had any issues since i last replaced the VC gasket (elring) and new bungs and used the non hardening aviation cement on gasket and your RTV for the bungs after proper clean and degrease. the...Leave a comment:
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wear on the cam lobe nose means wear on the rocker pad that you cant see...Leave a comment:
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