taz01 wrote:Fakey wrote:Just a question, Why cant he just fit the 80 series shocks with the extended bumpstops an leave the shock mounts as they are to give more suspension drop
that's what i was thinking by making blocks to fit in tower say 50mm with shocks added gives more drop but not reach full extended travel?
It is all about compromise. When you hit a bump you need up travel to absorb the shock. The slower you go the less you need and the faster you go the more you need.
Rather than absolute numbers you need to be looking at a percentage of it. You have to decide what you plan to do and then work backwards. 40% up and 60% down is a pretty average do anything setup. Going to 50% + will see the truck sitting higher and better for straight line big bumps. eg offroad racing while going 20% to 30% is where you'll trails truck and rock crawlers. For them there is far less impact and more about maximum wheel travel to keep them on the ground.
Just make sure you understand what sort of suspension setup you need to do what you want to do and then go backwards from there.
With my new truck I have set the chassis on the diffs then mounted the coilovers based upon that being maximum uptravel. The total travel and the % up and down I want has then dictated ride height. I have set mine so that at normal ride height it will be 50/50 in the front and the rear will be 42% up bu the rear has 24" of travel so a little different. When doing winch challenges then I'll also drop the height so it will be about 33% in the front but still have 6" up travel. And normal ride height is actually lower than my old GQ with 75mm springs and 50mm bodylift!
So for yours, I'd work out how much guard you are happy to cut out, then flex the axle until you have about what you think you'll get. I'd base this upon max droop of an 80 series shock with 50mm tower lift. (about 1/3 more travel than the factory shocks) That should then tell you where you bumpstop needs to be or whether you need more lift to get acceptable travel.
So if you were fitting 33 to 35's then I'd be pretty confident in giving you almost exact suspension specs but you're doing something different so follow the guidelines and good luck!!!!!!
PS I've seen a GQ with 39's and 2+2 lift so it can be done. They did cut ALOT of guard out though.
Nissan Terrano coilovers, turboed VH45, Safari axles, and some other stuff.