m7 big bore 800 turbo??

[snapperm7]

hey guys been looking at a turbo kit for my sled which was a m7 now a rktek800 can i use any 800 turbo kit or does it have to be specific 700 kit im not sure about this one looking for some advice found a couple kits looking to see if they will work thanks .

 

[ippielb]

I have an F7 with a D&D big bore 800, i made my own kit with an Aerocharger 53. The 700cc engine is different from the 800cc, so i personally would stick with a 700cc kit, but with a bigger turbo.

 

[everytime5.9]

You will need to have your head machined for the turbo application. But the big bore will work great turbocharged.

The turbo kits are near identical for the m7-m8 as far as components the only difference is how you wire the fuel pump and accessories. While many of the kits work fine i would look at a twisted or OVS setup for the m7.

 

[snapperm7]

It has removable domes currently runni g 13.5-1 I believe what dome would I need or would I need and entire head modification

 

[everytime5.9]

It has removable domes currently runni g 13.5-1 I believe what dome would I need or would I need and entire head modification

Kelsey has the turbo specific dome inserts you would need, tell him your elevation/boost levels/fuel.

 

[bparks]

your head would be find just pay attention to octane of fuel i run a m7 8oo bigbore with 14 .1 comp at 8000 plus feet no problem just 2 to 3 gallon of 112 per tank . My kit is a rg boondocker kit that has been played with to work for me .

 

[snapperm7]

We ride about 2000 to 8000 max will it still work don't want to add 112 to my tank like to just run straight av

 

[MarleneeSteven]

have a m7 thats been bored to 8 with a boondockers turbo. Keep the boost below 6# if you don't want to run racegas.

 

[snapperm7]

Is that enough 6# like a little more what would that equal out to in hp

 

[bparks]

at 2000 i would not go above 6 on strait av fuel but at 8000 you should get 8 out of it on same fuel just watch injector cycle if not a race gas kit

 

[snapperm7]

You figure all other equipment like oil res tank and components will match up. If so its time to turbo I have done the research and think its time just need to find a kit if you know of one plz let me know thanks for all the advice guys

 

[MarleneeSteven]

I'll expand a little...
My 2005 M7 was bored out to 800, by a machine shop. I have an older boondocker (2007) turbo kit. It was originally setup as a full RG kit, but I've put a different boost controller and waste gate, took out the intercooler. I'm running stock 800 heads. I've also got the muffler update. I live in Colorado and ride mostly around 10-13,000 ft.

even at this elevation, running anything above 6# of boost with 94 octane, and I get detonation. In fact, i was at 8# this weekend and melted the electrode on a cylinder.

I've only got 20 miles on the 800 motor, so I don't know a whole lot there, but it runs really strong, so far.

On the 700 motor, I could get away with 8#, and I'd throw in a gallon of racegas in premium, just to be sure. I ran up to 10# sometimes with the same setup and NEVER had problems.

I do have a little tuning to do still, and have a little lean spot when I come off boost, but I'll have that worked out in the next two weeks.

I know it's a pain, but I'll be pulling my spark plugs often to check them. It's the best way to see what's going on. I run an AFR and EGT's to check as I go, but it's best to see the plugs, i think.

Why are you so anti-race gas?

 

[MarleneeSteven]

and the rule of thumb that I've always been told is that you can expect about 7 track HP for every # of boost, at sea level.

 

[everytime5.9]

Get a hold of Racinstation, Twisted, or OVS and go from there...