Bilstein 5100's with stock springs

Go with 883 or 884 and 1.5" 3 leaf progressive in rear.

 

I agree with this. Why does everyone always talk about preloading the stock springs simply because you are raising the lower mount on the 5100s? It seems to me that when you raise the lower mount, it simply translates that into raising the entire front end of the truck the same amount. There is no additional force pressing down on the top of the spring that wasn't pressing down before lifting the lower mount. Unless of course, you are actually fully extending the strut and therefore compressing the spring. Maybe I'm wrong, but the way the term "preloading" gets thrown around here does not make sense to me.

 

The way I understand it is you're preloading the shock. You're riding around with it already partially extended, which is where the lift comes from.

Regardless of what you want to call it, it causes the truck to ride rough. I haven't seen a single person that uses stock coils with 5100s and says "Wow, that rides much smoother than before."

 

ok going to go with 884 and set 5100 at 0 ???? and yes i do have the 3 leaves in back ,Thanks for all your help ,

 

Is there a chart that has cab and motor size vs how much lift you get from the spring?

I just got the recall done and want to put new springs in the front and 5100s all around but much like the OP I don't want more than 1" of lift.

 

Not really. What size cab do you have? I see you're 4 cylinder.

 

Access cab 4wd. The rear rides so much better with the recall springs I want to treat the front!

 

This is directly off the bilstein website for the 5100 page 4.

'The lift on the 5100 Series leveling shocks is achieved by increasing the preload on the factory coil. By adding more preload, the shock is designed with more rebound damping as compared to the O.E. or standard aftermarket replacement shock.'

http://www.bilsteinus.com/fileadmin/user_upload/user_upload_us/pdfs/Bil_LevShks_WebArticle.pdf

 

This is interesting. I see where they say that but it still doesn't make any sense to me, and they don't explain it well at all. I just don't see why raising the spring perch would compress the spring more when there isn't anything pushing back against it on the top. Thanks for providing that info. It would be interesting to contact bilsteins to try to get a better explanation.

 

Just pulled the trigger on a Headstong setup. 5100,s,OME 884,s , 3 leaf AAL, 1/4" ds lean spacer. 5100,s set at 0. 2015,2.7,5spd,can't wait. Marie at HS is great, very helpful.

 

OME 883s should give you that little bit of lift, maybe a 1/2" more. I'm not positive, so your beat bet is to talk to Marie at headstrong off-road.

 

It compresses the progressive stock coil by raising the lower mounting perch but the top hat mounting point never adjusts thereby reducing the length of the coil and preloading. Stock coils are the same for OR vs Sport, only the shock valving is different. The stock coils have a broad street/comfort zone prior to exponentially increasing resistance for a harsh rebound. When you preload with 5100s the soft initial spring rate is gone and you are typically left with an extremely disproportionate coil for your suspension. All of the OME are linear rates so they will not react differently under preload.

 

Gonna try and explain, hopefully it makes sense.

Think about it more like this. I dont know whether youve put one together or not, but try to visualize the setup.

If you had the strut assembly laid out in front of you all together, no matter what the lift setting is, the shock will be fully extended. With the c clip set at 0, the spring will be at the least compressed state, between 0 setting and the top spring perch. Lets just say between those 2 points is 10".

Now if you moved the c clip up to the 2.5" setting, the space between the 2.5" setting and the top spring perch is now shorter than the 0 setting. Lets say its now 8.5". Now the sring is shorter and compressed.

The more compressed spring holds the truck up higher, giving it lift, but in turn causes it to be more stiff.

 

The OR spring is different from the sport spring. Compressing the OR spring is much more stiff than compressing the sport spring.

 

Interesting, I researched it quite a bit and I do get confused a lot. There is no weight difference (significant) between the OR and Sport. The valving was different on the Bilsteins but that was all the data I got from Toyota. I was also researching T100 coils as potential also because of the extra weight of the V8. They told me all Tacoma are the same coils, but I have been told a lot of things that I heard incorrectly, just ask my wife.

 

The difference between the sport and offroad spring is the spring rate. Doesnt have anything to do with the weight. The offroad has a progressive spring that handles uneven surfaces better for offroad. The sport has a linear rate spring.

 

Not to argue, but I'm pretty sure you are talking about the shock valving and not the spring rate. The rate is determined based upon the weight of the vehicle it is suspending, which is why there aren't different rates between the two. Progressive valving and digressive valving are utilized in shock valving for high and low speed off-road applications. Progressive springs or coils are horrible for off-road. Off-road manufacturers will apply dual springs in this situation when there is a need to adjust for jumps and other harsh off-road conditions at speed. If you just use one progressive coil then you have almost little to none adjustability for conditions. I think most if not all the long travel guys are using dual springs. Progressive coils are harder to manufacture and maintain consistency between runs. Linear coils are traditionally all you see on the big name off-road racing coils

 

No, Im not talking about the shock. The springs on the Offroad are different from the sport. Just look it up.

 

https://www.tacomaworld.com/threads/trd-off-road-and-trd-sport-front-spring-differences.380321/

Here you go guys. Nothing to do with shocks.

 

Please post a picture , I want to do that set up , I want to do it once and only once ! I decided aal ? in back Thanks Guys