a1320honda

I know its a stupid question, but i cant get this setup to get below 15-16lbs. Im trying to run 9 in the first couple of gears and its no bueno. It had a small dumptube on it and was blasting past 20+ at 7500RPM. Took the small dumptube off and can get it around 15ish but with the setup, its blowing the tires off in 3rd on 15lbs. Trying to decide if i need a different manifold or put a bigger gate on it. Just wondering if this is pretty normal for the setup?

Setup:
84mm 8.5 to 1
Skunk2 pro1's
Victor X
Stock port head
Full 3" exhaust
AFI (older) Ramhorn
Precision billet 6262 .82 exhaust
Tial 44mm Gate with 9lb spring

Have the Line from the compressor housing straight to the bottom port of the gate.

0mtber

iTrader: (2)

I have had several cars have creep issues with 6262 turbos even on a 46mm wg.
Then I have had some cars have no issues on a single 44mm using 6262 turbos.

Pressurize the bottom of the gate to make sure its opening.

a1320honda

It is opening, i checked it when i was trouble shooting my BCS. Double checked the diaphragm and that it has an 8.7lb spring it it. Everyting is functioning fine. Just creeping lol. Trying to decide if i wanna live with 15lbs or put a bigger gate on it.

Hyper16-Johnny

I have no boost problems with my AFI ramhorn, and that's with 38mm wg with a 1bar spring tuned @ 30psi.

My build:
84x87 GSR block
Wiseco 8.7:1-8.9:1 approx
Manley TT

P&P B16 head
RM valvetrain
Blox Type A cams

AFI Ramhorn turbo kit with a Garrett t3/t61

a1320honda

Does it run down at 1 bar with no creep issues?

Hyper16-Johnny

No issues whatsoever. Car stayed steady at 1bar. After installing boost solenoid for bbg and running 30 psi in 3rd and 4th gears, still no issues.

I noticed you mentioned you have the old manifold which was the design that had boost problems because of wg placement. I have the newer manifold with the fixed wg placement to fix the boost issues. I stayed in contact with Jesse (JDL Design) when he was still with AFI to assure that the problem was fixed before I purchased the kit. This was around when the MVS and MVR wg first came out, in which, I'm on the MVS.

TheShodan

iTrader: (14)

Those exhaust manifolds love to run pressure. I think your trying to run too little boost on a larger mid-frame turbo with a set of Pro1s on 44mm-46mm. These larger exhaust energy volume-manifolds just doesn't cut it for 8-14psi with any consistency for such low boost pressures. I've been seeing this on a lot of B, H, and K series setups lately, where the owner wants a 700hp capable turbo, but still want only to use 7-8psi at 250whp. May have to go twin or a 60mm to run such low boost. I say, since you have the equipment, use that boost pressure over 15psi.. Bump the pressure up and get used to it

LS AzZkIkr

You could try pulling some timing with the gear based timing settings depending on what software your using. That wouldn't cost any money to try and I have seen astounding results at the track from doing this in the lower gears when boost cannot get any lower and still over powering the tires.

Muckman

iTrader: (2)

Have you tried a 3psi small yellow spring? Im sure it would overboost still but hopefully not 15psi.

th3pwn3r

What about new tires or some more seat time? I'm sure you could get better with your pedal action to save you from spinning.

kyden

that's interesting. i have an SLS prototype manifold with a similar collector design and 6265, it will hold 8-10. pro1/victorx/44mm gate.

shanebadoo

OP, please state what sort of exhaust you are running. Another user said that his crept until he ran a full exhaust.

a1320honda

Its a full 3" with 12" resonator and Straight through muffler. The general consensus is that a ramhorn with this style of turbo and gate is prone to creeping till about 15 or so lbs. I had the 1.25" dump tube remade to 1.5 which is what the flange is. If i can get the dumptube on it and keep it down to 15lbs ill prolly just roll with it. If not, i think im gonna throw a 60mm gate on it lol. Like i was saying, with the dumptube it would blast over 20lbs around 7500. Took the dump tube off and would hold around 10 till around 7500 and then creep to around 15 by 9200.

Hyper16-Johnny

Why not just run a boost solenoid? That should fix any creep or boost problems, and you will already be set for high boost in the long run. It will also help spool up time and you can run bbg. Not to mention, boost solenoid will cost a lot less than going with a 60mm wg.

Hyper16-Johnny

Disregard my last post, I just saw your other thread and noticed that you already have a solenoid. Try out what shanebadoo said, that should be your fix.

spectacle

Not necessarily.

Muckman

iTrader: (2)

A boost controller cannot lower boost, only raise it.
Have you tried a smaller spring?

Hyper16-Johnny

He's already on a 9lbs spring. The problem he's having is keeping it there.

Muckman

iTrader: (2)

If a 9 spring creeps to 15 will a 3 spring creep to 15 too? I dont think so.

spectacle

What

dcmatt

iTrader: (7)

Seems he pinpointed the problem. Relocating or maybe doing a teardrop (I think thats the term) might help. That would be cheaper then a 60mm gate.

TheShodan

iTrader: (14)

I doubt that's the issue. i've had AFI manifolds from the original designer for years. There was never a creep issue with that configuration. Its a big manifold with low boost and good sized turbo.. The gate replacement is the best route.

Hyper16-Johnny

Mac, I'm on a 38mm MVS and don't have boost issues and OP is on the bigger 44mm wg and is having issues. I'm not totally sure it upgrading to a 60mm wg will completely fix the problem, but it should help some. Do you think since I have a slight smaller turbo than OP that this would be the reason I don't have boost issues? Not sure if turbo has anything to do with it but worth a quesion to ask.

a1320honda

A smaller turbo is surely gonna be a reason for less or no creep.

Well...my precision journal bearing turbo took a dump, so i pulled it all apart. Found the hole for the wastegate has an 1/8" lip all the way around inside. So im gonna clean that all up and smooth the transition into the gate. Should help quite a bit.

TheShodan

iTrader: (14)

As stated, having a slightly smaller turbo running more pressure could eliminate a lot of creep issues, but it also depends upon the turbo/wg/manifold combination. Since he's running an AFI Kooks, the next turbo may not have this effect, depending upon how much pressure he's running. So, I'm curious if a1320honda is going back to Precision, or going Garrett, BW, or Turbonetics this time around.