6lbs just not enough

[shade]

you dont need a check valve in the drain line for the mechanical scavenge pump. you do want a check valve in the feed line. the reason being the engine can drain oil from the upper galleys and cams etc and fill up the turbo after the bike is shut off and the pump isnt pumping. a 1 psi cracking pressure check valve prevents this.

Exactly correct. 1psi cracking pressure.

 

[Cncbusa]

you dont need a check valve in the drain line for the mechanical scavenge pump. you do want a check valve in the feed line. the reason being the engine can drain oil from the upper galleys and cams etc and fill up the turbo after the bike is shut off and the pump isnt pumping. a 1 psi cracking pressure check valve prevents this.

Thanks for that info!!!

 

[202mphbusa]

Thanks for that info!!!

And he would know better than ALMOST anyone

 

[202mphbusa]

was supposed to quote KZScott

 

[Cncbusa]

The rcc scavange pump has a -8an thread. I could not source a -8 flange to bolt to my t4 body precision turbo. So i made one. Not sure what others are doing but please tell!

 

[KZScott]

The rcc scavange pump has a -8an thread. I could not source a -8 flange to bolt to my t4 body precision turbo. So i made one. Not sure what others are doing but please tell!

View attachment 1607054

View attachment 1607055

you can run a half in hose barb, or if you have a thick enough flange like we use, tap it for 3/8 npt and screw in an adapter fitting

 

[Boosted Cycle Perf]

T4? Sheesh, what ar? I wouldn’t expect that to light off at any reasonable rpm.

 

[Cncbusa]

T4? Sheesh, what ar? I wouldn’t expect that to light off at any reasonable rpm.

.68

 

[Cncbusa]

Gonna crank her up this weekend!!! Hate them hose clamps. Im going with push on when i go to a 1:1.

 

[Cncbusa]

Wasnt thinking of the size when i ordered that air filter. Oops. As far as the turbo it spooled around 4-5k and was at 7psi at 6. I dont know that id like it coming in any sooner than that. Its not like it takes long to get to 5-6k rpm. Guy i got it from was on 38 spring pressure and then boost controll too makinh big power. Im hoping it will get me 600hp down the road. I have a little garret disco that i never even ended up running, gt28r i think it is. But why go small

 

[Cncbusa]

Shes finally back together and runn!!! Hope to break in over the next couple weeks.... then its to the dyno.

 

[Cncbusa]

I wish i had made time to clean up the harness. Part of the reason i didnt was because i knew mine worked beforehand and didnt want to make any other possible first fire issues then i had too. But thats next on the list.

 

[Cncbusa]

Bike started up no issues. until... was going to start my break in and now it wont start. I have a feeling its the neutral safety switch or kickstand. Full spectrum battery with full charge ruled out. Tried jumping the kickstand and no go but might not of had a good connection. I rolled it down the street and it cranked right up in 1st try. So its something stupid but havent had time to figure it out.

 

[Mr Brown]

Gotta pull the clutch in.

 

[Cncbusa]

Turns out was just the ground. I couldnt remember where it went and bolted it to the frame, moved it to the engine and she fired right up.

 

[Cncbusa]

T4? Sheesh, what ar? I wouldn’t expect that to light off at any reasonable rpm.

I couldn't remember for sure so i said 6ish. Its actually at around 3k, obviously that varies with load, gear, etc. But its around 3k at any low speed that it starts boosting and hits 8psi at 6ish.

 

[busakiller]

@Cncbusa lets us know how you like that clutch set up. I might go to that clutch on my turbo bike. Post up some dyno graphs when you get it tuned

 

[Cncbusa]

@Cncbusa lets us know how you like that clutch set up. I might go to that clutch on my turbo bike. Post up some dyno graphs when you get it tuned

Will do.

 

[Cncbusa]

not sure how or why it broke (problably made from chinesium) but made a new one real quick. Trying to hit the track sunday. Havent got the ams hooked up yet so still on spring pressure. But will post some #s when i do.

 

[Cncbusa]

Btw the nlr clutch lockup has been great so far on 10psi. I still have 3 h.d. springs in the clutch, cant find the 3 oem i took out. Would like to try all oem springs to lighten up the clutch pull. Or maybe just 3 h.d?