Static compression with a cr 460 and a 120" suburban kit.

[HD/Wrench]

That and the screws are self tapping so you may have tq on the screw but do you have clamp load on given part

[Sunny Jim]

Given the suburban kit is set at 10.9:1 , how does it compare with other available kits eg. Fuelmoto, Tman?

[happyman]

Have used the fulsac kit it works very well .

https://www.sscycle.com/tappet-cuffs/
Lifters flavor of the month , S&S is offering a low cost billet lifter anti rotation block . Nice upgrade .

Valve job nothing wrong with that either .  At and at that point I would at least do a minor blend in several areas as these are stock heads with core shift and many have material hanging into the port .  nothing crazy by any means something that you can do your self or have the head porter " clean them up" I do not want to use the term porting as well just me I guess.   As I said I am in the process of putting that 120 together ow.. I wanted to so badly clean the ports up but .. cannot as I want to see how it works as a stock head . Testing an testing

Check the oilers to see if they are loose , there is a small trick there as well but it may or may not be the total reason for sumping in some engines .    Case pick up is most likely a larger reason . But will have to see where this goes from HD as well .


In my opinion the OEM springs are fine for lift up to the 460 range . SE offering of springs at this point is a good price point .  or this option in the very close price point as well  https://www.sscycle.com/products/heavy-duty-valve-spring-kit-for-2017-18-m8-touring-models/

curious  about the term case pickup.     can you help me out a little hopefully  Thank

[VDeuce]

Given the suburban kit is set at 10.9:1 , how does it compare with other available kits eg. Fuelmoto, Tman?

Fuel Moto would not provide me with piston dome volume.

T-Man's 120 pistons have a 6CC dome, cutable. So it all depends on where the heads are. If we assume 89CC heads, a 6CC dome will be very high on compression, about 11.7:1 static and over 240CCP and I would need to cut them down to the point that may as well use a flattop, which is what Suburban offers.

T-Man's setup seems geared toward his heads which have larger chamber volume.

[BigT]

I bought a set of M8 Wiesco 11:1  4.125 pistons from Tman. Flat top -4 cc. I thought he offered the same piston at 4.185 / 120".  Cranks over at 218 F&R with the TTS 200 cam.

[VDeuce]

I bought a set of M8 Wiesco 11:1  4.125 pistons from Tman. Flat top -4 cc. I thought he offered the same piston at 4.185 / 120".  Cranks over at 218 F&R with the TTS 200 cam.

That I will check on Monday, thanks! The website lists flattops for the 117 version, but I would want them for the 120 bored cylinders.