houseofboost

iTrader: (3)

Fast is fast. No matter the gearing.

Good job. Very impressive. It's still amazes me how much horsepower your making.

MIGHTYMOUSE

iTrader: (59)

i calculated you being at about 5500rpm at the line with that tire and gear combo.
with your peak hp at 4900, sounds like the combo is right on the money to me

i have an inch shorter tire and the same gear and is set up to pull 150mph at 6300rpm, where my max hp is at 5600rpm.

with all the wheelspin you speak of, consider yourself lucky you had such a large tire on there!

good mph, im looking for right in that range on 92 octane only... sorry to hear about the motor, i reccomend speed inc rails and some -8 pressure line.

scottywheels

congrats Rob. hopefully I will run into you again when I hed down south to race. I just got the tranny back. I need to get to the track to stay ahead of PSJ...lol

your car is holding its own for the beating you are giving it, nice job man.

Rob Raymer

Thanks. We have our own billet fuel rails we sell in stock. It wasn't showing any signs of being lean anyway...A/F was 11.1:1 at the traps on 11lbs of boost. And 12.7:1 on 13.5lbs of boost. Which is basically what we expected it to be considering the IC efficiency at the track as compared to on the dyno.

My point was to show the potential of the stock components, even if it meant risking the engine. However, it's not like the engine is blown. It's just starting to show signs of wear now. Which I would say is acceptable considering the abuse it's been through, and the mileage. In fact, I think STP Oil Treatment may take care of it all together. That stuff is the bomb! But I guess we'll never know.

Doesn't Virginia sell anything higher than 92 octane??? I guess I just don't understand the point of risking a high dollar setup (especially when you are on an admitted budget) just to save $.15/gallon. Oh well, not my ride.

Pro Stock John

iTrader: (34)

Yah actually the 3.42 combo and 28" slicks probably makes sense given where your combo made peak HP. Harlan what was your best MPH with stock longblock? I know Harlan went 143mph with his forged 348ci and around 3600 raceweight but that's a different combo.

MIGHTYMOUSE

iTrader: (59)

i will be running 93 completely safe. day in and day out. the 11psi level is still low for what it could be pushed to on pump gas.

i thought the target a/f needed to be fatter for methanol than gasoline? i never paid that much attention to it but i heard nearing 13:1 at that kinda output is 'risky'

if you know where to get c16 for 2 bux a gallon please let me know, and ill run 16psi day in day out completely safe because THAT too is till low for what it could be pushed to.

Rob Raymer

You're forgetting the fact that the taller tires influence spool-up. I can tell you that it was DRAMATICALLY slower spooling with the 28" tires, than with the stock 25 1/2" tires. Also, the slicks grow at the end of the track.

From my calculations, the 28" tire would actually be the equivalent of running about a 3.10 gear.

Rob Raymer

Where are you deriving this information from? I'm just wondering how you can just make a blanket statement that "11psi is low for what it could be pushed to on pump gas".? I'm not arguing, I just want to know how you know this??

I think you are confusing running straight methanol, versus methanol injection. I was also running C16 at the track as well.

No, you said you were going to run 92 octane...which is why I asked if that was the highest octane available in Va. At 775rwhp, you were pretty close to being max'd out on turbo also. So I would think at that point octane would be an issue, since you are really starting to heat up the air at that HP level.

Pro Stock John

iTrader: (34)

Rob did you turn down the boost because the motor ran too hot, I missed that part.... you went 136mph with 11 psi but did 775rwhp 13psi?

MIGHTYMOUSE

iTrader: (59)

i calculated for your tire growth... if you didnt trim the rear bumper thats why you were getting tire smoke/rubbing down at the big end. thats a HUGE tire... and why i stayed with the hoosier 27's.

i figured you would have run the et streets you dynoed with at the track instead of these 28's you arent happy with.

i'm basing my comments off georges comments to me and his tuning expertise.
as you know my engine can handle cylinder pressure to the tune of 720rwtq (as done with your kit) so i can (safely) add boost until my tq peaks at around that value (same cyl. pressure), which could put me well into the upper 600's in hp on pump gas.

the current turbo is good for 9-950rwhp.

Rob Raymer

I ran a 136 on the 11lbs of boost with the program for 13.5lbs of boost (making it therefore rich, make sense?) When I turned the boost up to 13.5lbs, the car got really loose on the shifts, forcing me to "peddle" it. I only ran it at 13.5lbs twice, and on one of those runs it went 11.45 @ 129 completely missing 4th gear, and peddling it. The other time, I nearly killed the car on the "launch", which you could see in the 2.15 60ft (worst of the day). I also had to peddle that pass from the 1/8 to the 1/4. Several people on this board will attest to the fact that the car was getting somewhat sideways crossing the traps!

Like we all said, the track prep (or lack of), was TERRIBLE!

Rob Raymer

Not if you're running the Innovative On-Center T80 with either the .85 or .96 AR housing. That turbo is only rated for 1000fwhp. The Tangental is rated at 1100fwhp.

So unless you only have a 5% drivetrain loss, I wouldn't get my hopes up on that 950rwhp number.

MIGHTYMOUSE

iTrader: (59)

its tangental, and im telling you exactly what george was told by innovative as they exchanged info about the results of my car.

also no heat building up.. intake temps were in the 60* range end of the pulls... i expect them to stil be under 100* end of the 1/4

Pro Stock John

iTrader: (34)

Oh, thanks Rob, I was just trying to figure how much power one of our cars could make thru a stock longblock going down the track, and it sounds like 140 mph would be possible if the car was hooking up and was making good power at launch. That means that high 9's, maybe 9.75 is achievable with a stock longblock and proper fueling.

But when you talked about the vacuum, are you saying that something is wrong with the stock rings?

HUGGER ORANGE SS

iTrader: (2)

Great times Rob...

Didn't that guy with the Yellow 2002 CE WS6 with a single turbo run 9.9's at 136 on a bone stock bottom end with heads and cam??

Clint

Rob Raymer

MM- I didn't realize you had a tangental housing. I hadn't looked at the new pics since the day you first posted them. So yes, you are correct....the tangental version will support 1100fwhp. Now you just need to get it to the track.

PSJ, I have no idea about the rings actual condition. I'm just making my judgement based on the now lower engine vacuum reading at idle. Though I would FULLY expect that the stock rings would have seen their better days by now.
I'm sure that at a well prepped track, I would have been able to use 13.5lbs of boost and seen an easy 140mph.

Rob Raymer

That's Mike's car. And the answer is, "sort of". His car is a twin turbo, not a single, and it's a stock bottom end other than the camshaft. It also does have ported heads as you mentioned, and an automatic with trans-brake, and 12-Bolt(?). Mike's car runs GREAT! As I've said many times here, I think the single most impressive car on the Board. (well...up until now maybe... )

My engine is COMPLETELY stock, as is the 6 speed trans and the 10 bolt rear end. The only thing that's really comparable on our two cars, is the 1/4 mph.

Pro Stock John

iTrader: (34)

Yah I think ported heads and a bigger cam are going to be worth 5 tenths over a stock longblock configuration.

MIGHTYMOUSE

iTrader: (59)

rob, going to bother with a leakdown or even a hoses check to make sure you dont have a large leak?

i am registered for a race at mir on april third, by then i hope to have the
roll bar, new rear, s4i if the s4 ceramic craps, new rotors and pads, new brake lines, new a/f wideband meter, wheels/tires fitted to calipers, safety cut off switch, gel battery install done in time... will probably require some vacation from work to get it done.. but i still need the dang car to get here.
i plan on 'safely' running the **** out of it.

S_J_H

TRUE, much richer! But the wideband don't give a bears *** what fuel is used. It simply displays a Vout which the display is programmed to interpret into an A-F number.
So if you don't reprogram the display for different fuels, then for instance if you ran pure methanol at a stoich ~6.5-1, the display will still show 14.7-1 as it was setup to display for gasoline. But in reality the actual A-F would be around 6.5-1.
So His A-F was fine.
I was just comparing it with my tire/gear combo to give myself an idea of what sort of power you really have. Your 3.42 gearing with 28" tires is about equal to running a 3.23 with a 26" tire.
Nice power.

Steve