I've been thinkin about turning up the boost a bit before my new motor/setup goes in this winter but not sure how much power I can make with my current setup. If I do turn it up it will only be for a few passes down the track just to see what it will do. No beating on it on the streets. Here's the just of it.

stock k20a2 w/6spd trans
gt3582r
tial 60mm gate
tial 50mm bov
walbro 255 pump
1000cc injectors
clutchmasters fx400

Right now the car is running just off the gate 13psi making 498whp/ 326tq on 100 octane pump gas(unleaded).<<<this was on a dynapak not sure if they are that different. Everything has ran flawless making many passes on this setup. 10.50's @ 133mph. I'm wanting to turn it up a bit but not much and do boost by gear. Right now my 1st and 2nd gear is getting out good without too much spin so I'll probably up boost just 3rd and up. So here are a few questions I have to people that may have been through this.I really don't want to hurt the motor 1st pass down the track(or on dyno) but I do want to see what the stock motor with this turbo kit has in it.

stock motor...will it hold around 550-600whp on race gas?
what gas to use...c16 or q16?
will the walbro be sufficient enough for that power?

 

I don't think anyone can answer "will the motor hold" at 600hp? Many people have pushed stock k motors into the 600hp range and they have lived. Others have not been so lucky. I would say if you really like the motor and can't live without it (daily driver) don't do it. If you just want to see what it runs and have another motor for back up, go for it.

 

Chris t4eg on here, bluehatch on k20a.org has pushed 26psi. Your just going to have to take the chance.

 

yeah it's not a daily I hardly even drive the car on the street. I have my block alreay at my tuners shop getting ready to be built for this winters setup so if it goes it goes that's not really what I want to happen but I just thought some opinions from other people may help me out. Also see if someone saw a weak link in the parts I have like the fuel pump for example. Will the pump be good enough for 600whp

 

You are running close to the edge of what that motor can handle as is. Guys have made 600 on that stock motor, but how long do they last. I think if you aren't willing to blow that motor, then you aren't ready to find out how much it can take. Don't ruin a good motor to prove a point. The fact that you drive that car around and run it like you do says a lot about how strong those things are.

 

Yeah with that pump, I would just hold off until you get a bigger pump, new lines and then after the winter turn up the boost.

 

The 255 should do 550 without a problem and probably a little more. I would guess the motor would hold more as well, and your building a new motor for it, so you can throw the dice a little bit. The cars coming appart before long anyways, you dont need it for transportation, id say see if what you can do with it. I have seen you run at trails and its def really impressive for a stock motor and 13psi, its almost hard to believe in my opinion. But either way its your call, and if you decide to turn it up you should let me know so i can come and watch.. By the way, you def. have a really nice car

 

thanks. yeah I've seen you around on slowmo forums and such but don't think I've met you in person. If I do turn it up Corey and I are going to do it before IFO Indiana but I'm still unsure about it. The pump was one of the only things I was worried about. The motors only got about 38k miles on it and I'm pretty sure it will take the power. Then again will the trans hold it...probably not but maybe for a few passes.If I do turn it up should I go with c16 or q16? What's the advantages/disadvantages of each gas?

 

Yea you have meant me, its been a while ago. I came out to your house and picked up a b16a3 from you in my si when it was blue i believe.

 

If you're going to turn up the boost I would run the Q16 since the oxygenation, but you will have to run a little more fuel. Q16 will make a little more power than C16 to offset the additional fuel needs.

I have been running it and love it. It does require a little more up keep. You need to drain the tank after each use since your tank is vented.

Just my 2 cents. If you need some for Indy I will have a drum to sell out of.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">
Q16 will work well in any drag racing or circle track application -- naturally aspirated, nitrous or blowers. Q16 is highly oxygenated, requiring a 4-6% increase in fuel flow, which will make 3-5% more power than competitive 116 octane fuels. Q16's oxygenation will significantly expand the range of air/fuel ratio acceptability, so performance will be more consistent and won't vary as dramatically with altitude or density changes. For bracket racers, variations in ET from run to run will be substantially reduced. This added fuel flow also effectively increases its octane by 6-8 numbers above its standard ASTM octane rating.

• Color: Yellow
• Oxygenated: Yes
• Motor Octane: 116
• Research Octane: 120+
• Specific Gravity: .716 at 60° F

</TD></TR></TABLE>


Modified by Miss PSI at 4:50 PM 9/12/2008

 

If q16 requires more fuel and hes going to be on the limit of his fuel pump and lines, why not go with c16?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Coreymdean &raquo;</TD></TR><TR><TD CLASS="quote">If q16 requires more fuel and hes going to be on the limit of his fuel pump and lines, why not go with c16? </TD></TR></TABLE>

Because the extra power and extra fuel almost equal each other out and you have the added benefit of the resistance to detonation. Q16 has an expanded range of A/F acceptability... could help save the motor if you hit a lean spot.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Miss PSI &raquo;</TD></TR><TR><TD CLASS="quote">

Because the extra power and extra fuel almost equal each other out and you have the added benefit of the resistance to detonation. Q16 has an expanded range of A/F acceptability... could help save the motor if you hit a lean spot. </TD></TR></TABLE>

It seams like right now hes going to be running out of pump as it is. Engineers and their over thinking lol.

The fuel is not going to make a difference when which ever part or parts decide to let loose. Hes running 100oct plenty enough for make 550-600 pretty safely.

If the tuner is good enough, the motor shouldnt hit lean spots or be comprimised. Leave it at a safe 11.4-11.6 range and everything should be fine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Coreymdean &raquo;</TD></TR><TR><TD CLASS="quote">Yea you have meant me, its been a while ago. I came out to your house and picked up a b16a3 from you in my si when it was blue i believe. </TD></TR></TABLE>

AHHH yeah now I feel stupid I remember that now. Yeah that has been a while.

Right now I think my pump is for sure my limiting factor and I don't want to hurt the motor just off a pump that isn't strong enough and I'm not sure if only going up a few lbs. in boost to make 550 will be worth it. I would like to make 600 and see what it does but pretty postitive I will need a different pump for that.

 

my buddy ben just got his car back from slomo a little while ago and he made 600 on a 255. Everyday its at 550 on c16 pump seems to be keeping up good for that

 

Nice...is that the red hatch? There is going to be a meet at hugh white honda on oct. 4th I'm going to so I'll probably get the car retuned on race gas the weekend after that if I decide to do it.

 

Nope its a 00 si Blue. walbro 255 stock fuel lines to the engine bay with aftermarket filter and lines to the rail.

http://www.slomomotorsports.co...=6834

 

Hi, i think that is the wrong link.

BTW I am officially turned off hard core by there dyno graph forum.
I browsed and wanted it to be a happy place with info being that it is close to me. I am not happy nor impressed.

 

quick edit*

maybe that's not to OP car?


I am looking for the OP car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SwappedTURBOegg &raquo;</TD></TR><TR><TD CLASS="quote">quick edit*

maybe that's not to OP car?


I am looking for the OP car.</TD></TR></TABLE>

A lot of the cars tuned at slowmo are not put on the forum do to owners choice. They do not want there numbers posted everywhere and the people that do put them on there do not want there full setup posted.

That dyno graph was not mine but it is up there somewhere though. My car made 498whp 326tq. at 13psi. Stock motor on pump gas.

 

that graph was just showing what a walbro 255 was capable of....