The reason I ask is that it might influence my design of the linkage for my individual throttle bodies

thanks
QUOTE (Mueller @ Mar 16 2005, 09:49 PM) |
I know that the motor should "grow" when it gets warm/hot...anyone have some numbers for how much wider the engine grows when it's at operating temperature? The reason I ask is that it might influence my design of the linkage for my individual throttle bodies ![]() thanks |
QUOTE (Mueller @ Mar 16 2005, 10:15 PM) |
dude, you know who you are talking to right??? I cannot follow the normal path of doing anything ![]() |
QUOTE (Aaron Cox @ Mar 16 2005, 10:17 PM) |
i can only aspire to be like you my friend...make stuff mo betta! ![]() what do you have in mind oh wild one? |
QUOTE (Thorshammer @ Mar 17 2005, 08:37 AM) |
I measured a 911 engine to grow .006-.008 at 220 degrees oil temp and 280 CHT. This was with aluminum cylinders and stock studs. Having a higher grade of stud and iron cylinders would change this, as for the expansion rate of alluminum, throw those calcs out of the window, because the major expansion portion (cylinder and head) are held together by the studs from the cases and their growth is restrained, thats why your figures seem a little high. Now on 944 blocks, the growth is huge, like .018-.022 not that any of you guys have those rats. I do not know on a type 4 block, But suffice to say if you are making Throttle bodies and engieering them, you must tie them to one another by some solid mechanical means so a linkage system can be stable. But I am sure you already know this. and I hope you are building counter rotating Barrel valves, because if you are doing butterflys, you are wasting your time. You can't make them for as cheap as you can buy them, when you figure time and materials. But if you are going to all that trouble, build something real nice. Erik |
QUOTE (Jake Raby @ Mar 18 2005, 09:01 AM) |
Dave, The TIV has the same issue.. |
QUOTE (Jake Raby @ Mar 18 2005, 08:22 AM) |
Yep... Paper is worthless.. It takes trial and error to really work kinks out. Since I'm no engineer it is my only method. While it may take longer it yields great results most of the time! |