Jobless
New member
- Joined
- Jun 16, 2008
- Messages
- 61
Seem to be having some issues with the twins.
Smarty is on 5 and the TST is on 0.
Unloaded on flat ground it makes about 32psi, 1200 degrees, lots of smoke and is real slow to spool up, this is in 5th & 6th gear and pretty much just flooring it...I could do this with the single HX35 only it would spool a whole lot faster.
While towing about 10k pounds it made 25psi of boost but was at 1250 degrees...6th gear doing 65+mph which puts the RPM's a hair under 2k. this was on the flats and slight inclines between Monroe and Lynnwood and back. I couldn't get any more boost out of it because it would just cause the EGT's to climb higher.
After talking with Pete it seems I had the wastgate set up with no preload, I took it apart and gave it about a 1/4" of preload but it didn't seem to do anything.
I pulled all the cold air pipes and started the truck to ensure that at idle both turbos spin freely, which they do.
When building the HX35 I attached a larger valve to the wastgate so I am starting to think that maybe I had the lever with the flapper valve misaligned just enough to make for a bad seal? I can check this by removing the hotpipe later...
Should I try giving the wastegate more preload before removing the hotpipe and checking the wastegate or is there something else I should be looking at?
Looking for ideas...
Thanks
Brad
Truck specs...
'00 3500 drw 2wd 6sp SO, Jammer 3's, FASS Pump, AFE 4", Smarty, TST PM3, ARP studs, fire-ringed, CON-OFE, CFM+, K&N, HX35/S400
Smarty is on 5 and the TST is on 0.
Unloaded on flat ground it makes about 32psi, 1200 degrees, lots of smoke and is real slow to spool up, this is in 5th & 6th gear and pretty much just flooring it...I could do this with the single HX35 only it would spool a whole lot faster.
While towing about 10k pounds it made 25psi of boost but was at 1250 degrees...6th gear doing 65+mph which puts the RPM's a hair under 2k. this was on the flats and slight inclines between Monroe and Lynnwood and back. I couldn't get any more boost out of it because it would just cause the EGT's to climb higher.
After talking with Pete it seems I had the wastgate set up with no preload, I took it apart and gave it about a 1/4" of preload but it didn't seem to do anything.
I pulled all the cold air pipes and started the truck to ensure that at idle both turbos spin freely, which they do.
When building the HX35 I attached a larger valve to the wastgate so I am starting to think that maybe I had the lever with the flapper valve misaligned just enough to make for a bad seal? I can check this by removing the hotpipe later...
Should I try giving the wastegate more preload before removing the hotpipe and checking the wastegate or is there something else I should be looking at?
Looking for ideas...
Thanks
Brad
Truck specs...
'00 3500 drw 2wd 6sp SO, Jammer 3's, FASS Pump, AFE 4", Smarty, TST PM3, ARP studs, fire-ringed, CON-OFE, CFM+, K&N, HX35/S400
Last edited: