i wouldnt fuck about doing dodgy stuff like that especially to the valve train - a good and complicated way to fuck up an engine if you ask me . . . . . .
I would say..buy some proper valve springs.
I almost do the trick with the thicker washers everytime on uprated springs but not for the propose you thinking doing it.
You will gain next to nothing adding there thicker washers. The material of the spring itshelf should be thicker and stronger.
If i am not mistaken the base pressure of the oem is 28lbs and cruise are 40-45 lbs..hyabusa springs are 60 lbs..
Noway you can go from 28lbs to 40 whatever washer you put in there.
The other prob you will face is that if you put thick washers and high lift cam could face some coil to coil binding wich can cause damage to the cam or fully destroy the engine and head..
Chris
I would also like to know this.any uprated replacements that need no aditional work?
Some awesome info there dude.thanks very much. . . .
quick question though,does the higher spring strength mean that there more pressure on cams etc and there a slight initial loss of bhp?
I would say..buy some proper valve springs.
I almost do the trick with the thicker washers everytime on uprated springs but not for the propose you thinking doing it.
You will gain next to nothing adding there thicker washers. The material of the spring itshelf should be thicker and stronger.
If i am not mistaken the base pressure of the oem is 28lbs and cruise are 40-45 lbs..hyabusa springs are 60 lbs..
Noway you can go from 28lbs to 40 whatever washer you put in there.
The other prob you will face is that if you put thick washers and high lift cam could face some coil to coil binding wich can cause damage to the cam or fully destroy the engine and head..
Chris
Any spring will basically be the same length as the stock springs once fitted, unless you get a valve angle job done then the top of the valve stem will sit very slightly higher and in turn make the spring longer.
With uprated springs you should just fit them and not need to worry unless your cams have massive lift. Then you need to check the springs coils are not being crushed together when compressed.