[luke1990]

Hi all,

Does anybody here know where / from who I can source modified exhaust cam (to flow more fuel)? I know these exist but can't find any shop that sells / does these.

Thanks a lot!

[Kponti]

Originally Posted by luke1990

Hi all,

Does anybody here know where / from who I can source modified exhaust cam (to flow more fuel)? I know these exist but can't find any shop that sells / does these.

Thanks a lot!

Flow more fuel??? Flow more air maybe, but more fuel is not the function of the camshafts (intake or exhaust)

[luke1990]

Originally Posted by Kponti

Flow more fuel??? Flow more air maybe, but more fuel is not the function of the camshafts (intake or exhaust)

I have no idea how it works but it's used to flow more fuel 😃.
Questions remains - any idea on who does this? Thanks!

[pbonsalb]

Did you try asking RK Autowerk? They seem to be building motors and working heads and adding bigger turbos and tuning for E85 so they should know about adding more fuel if more is needed.

[luke1990]

Originally Posted by pbonsalb

Did you try asking RK Autowerk? They seem to be building motors and working heads and adding bigger turbos and tuning for E85 so they should know about adding more fuel if more is needed.

Originally Posted by pbonsalb

Did you try asking RK Autowerk? They seem to be building motors and working heads and adding bigger turbos and tuning for E85 so they should know about adding more fuel if more is needed.

Thank you, will try! I don't think they'd be able to run E85 as the hpfp on bigger turbos simply won't flow as much, but for sure they must do something (well meth helps too )

[Holset]

Originally Posted by Kponti

Flow more fuel??? Flow more air maybe, but more fuel is not the function of the camshafts (intake or exhaust)

My guess is that they modify the nock on the camshaft that drives the hpfp for more fuel.

[TinCanSailor]

In case anyone else is looking for this setup. Sales@RKautowerks has them now. I am hoping to get feedback from folks running modified camshafts.

https://www.rkautowerks.com/index.ph...t-cam-upgrade/

[Maverik259]

Originally Posted by TinCanSailor

In case anyone else is looking for this setup. Sales@RKautowerks has them now. I am hoping to get feedback from folks running modified camshafts.

https://www.rkautowerks.com/index.php/product/s63tu-exhaust-cam-upgrade/

Woot. $3050 and have to pay more for gas. Haha must be pretty deep into a build to be going this far. Hopefully this isn’t the first mod.

[TinCanSailor]

Originally Posted by Maverik259

Woot. $3050 and have to pay more for gas. Haha must be pretty deep into a build to be going this far. Hopefully this isn’t the first mod.

Blessed in the fact that my car is not a daily driver. Not terribly deep in the build but I have collected things and working n building the cad fr m back to front, diff the engine. Having seized one engine after years of care and maintenance and easy driving I want to have a little more fun this time around.

E85 is cheaper where I live but I am aware that it is less efficient than the petrol equivalent. That said it burns cooler and has a higher octane equivalent rating.

3k for a burst of more when I got that long skin joy button in Nader the right foot is a drop in the bucket in the grand scheme of things.

Love my car and I expect to own it for many years to come.

[AUSX5M]

Had anyone done the cams, what additional power are they producing and what do they sound like. Hoping they sound a little tougher than stock

[pbonsalb]

I don’t think the RK exhaust cam changes anything other than the fuel pump drive.

[TinCanSailor]

Originally Posted by pbonsalb

I don’t think the RK exhaust cam changes anything other than the fuel pump drive.

I am in the process of having an @rkautowerks forged engine with RK's cams. I have the F90 HPFP's which are need for the F1x M5/M6's once the break in work has been done on 93 octane I will work with the folks Midnitetuning on tuning for e85.