time for a rebuild

[bens250ex]

ok its time i break down and give my 400 some power. it also needs a rebuild so i figured i would get it done good. first i dont want to run race gas so should i use a 11:1 ? then my next question is i dont want to have to be working on it constantly so how about the 426 kit with stage 2 hotcams? will this give me good power ? should i do anything else to get more power like any port work or anything? my maine concern is i want it to be reliable will the 426 kit still be reliable?

[REDRIDDER]

It will be reliable if you get a new sleeve i got mine from LA SLEEVE also you might want to check out GT thunders HD head studs i didn't not use them so well see she holds up check out my sig lol...

[bens250ex]

so do you have to get a new sleeve? i thought you could bore the stock one some ? what all will i need

[REDRIDDER]

Originally posted by bens250ex
so do you have to get a new sleeve? i thought you could bore the stock one some ? what all will i need you can bore out the stock sleeve only problem is it now really thin it is also the last bore size you can get out of a stock sleeve so if you ever blow her up you need to resleeve anyways.I just got a new sleeve from LA SLEEVE cause with theirs they bore the cylinder its self and put in a sleeve that if you do ever blow it up you can bore it to a 440.plus their is more metal surrounding the piston to help absorb the heat more.

[tar]

I would also do HD head studs and a HD cam chain If I were you.

[bens250ex]

how much should it cost to get a new sleeve put in? if i go ahead and get a new sleeve, cam chain, and hd studs should i just go with a 440 kit? how reliable are the 440 kits. would it be more reliable than a 426 just bored stock cylender, stock chain, and maybe some hd studs

[86 Quad R]

you can get the complete kit retail for 429.00, 550.00 with installation. LA Sleeve (http://www.lasleeve.com/master.html)

[fastredrider44]

you can bore out the stock sleeve to 426 and everything be fine. Can't go any bigger than that. The advantage to boring out stock sleeves is that you save a lot of money. I did all my own motor work, so saved a lot there, bought a piston and gasket kit for around 150 and had it professionally bored for $40. I felt like I was breaking the rules by getting everything so cheap.

[MO-EX-RIDER]

^^ how long has it been together? could i get 50-60 hours out of it being on the rev limiter half the time??? and im serious:eek2: :eek2: :eek2: :eek2: :eek2:

just looking for a good solid motor with more power to last me about 10-15 races :devil:

[bens250ex]

i think i have decided to go with a 440 kit. i want put in a cam yet but will in the future. now i need someone to buy a set of a-arms im sellin and i will order the kit. 86r were have yall been riddin.? yall have any were good down towards you?

[86 Quad R]

this time of the year there isnt but one place to be riding and thats the creeks. :D tooo dayum hot to ride anywhere else.

[bens250ex]

we go out to the mississippi river and ride the sand bars . what creeks do yall ride

[86 Quad R]

several that are local to us.

[bens250ex]

i ordered a 440 kit but were can i get hd head studs?

[REDRIDDER]

This is from GT thunder.com here you go...TRX400EX Heavy Duty Head Studs

$59.95

These head studs are for repairing the 400EX cylinder after the thread in the cylinder are damaged or can be installed in a new cylinder to help prevent head gaskets failing as quickly. They have shown to have over 70% more holding strength then the stock head studs due to the increased diameter and the longer threaded area on the studs.

They can be installed with the cylinder on the quad but we prefer to machine the cylinder for the new studs on a mill for better accuracy.

400EX Heavy Duty Stud Kit - $59.95

Roll form tap $39.95

Stud Installation - $55.00



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