what is a good low 11 to high 10 combo?

[southern boost]

I would like to know what a good combo would be for my car to run a low 11 or possibly a high 10. I would also like to know if the lockin up of the 50s is true or false because i put them in my car and i'm runnin 25 on my boost and 45 lbs fp. I would apperciate any ideas or suggestions. thanxs randy



also what would be a good price for my ta49.

a few new mods since I up dated my sig egt and power plate.

 

[azgn]

the combo you have now should be good for 11.7's or so....upgrade your turbo to something like a 60 series will give you a few more tenths....upgrade your heads and you'll be there..all this assumes the ability to launch hard (10-15 psi) and can run some boost( 25+)

 

[southern boost]

Hey woody thanxs. I was also thinkin about a cam upgrade or do you think that the stock will handle the nunbers i am shooting for again thanxs for the info.

 

[Two Lane]

So. Boost,

NA Chevies, Fords, etc., get help from bigger/better cams early on...not so with the TRs.

A camshaft swap could be considered as one of the last mods to the 3.8 Turbo motor.

Bigger turbo, good exhaust, head work, etc., all came before a cam in the fastest TRs I know of...

HTH

 

[southern boost]

Hey 2 lane thanxs,but lookin at this from a streetable point of view what would be best turbo. I have been lookin at the te-61, but some local guys say that this turbo has lag , so what would you guys recommend with my combo on foot brake. thanxs randy

 

[Awesome T]

Hey S.B,
Interesting question about the 50's locking up. I run 009's, so no personal experience with them, but I remeber Jim Haas posting results of tests on the 50's and them locking up. Jim has a company dealing with engines and horsepower, and has flowed them to the point where they locked up - around 85-90 psi. He recommended 55's instead, but it seemed no one paid him any attention. Jim puts on the Buicks at Bristol event, and knows quite a bit about these cars, and automobiles in general. I think his post on the subject was lost in the Big Crash of the board a year or so ago. HTH.

 

[Two Lane]

Southern,

How about:

1.) A 3"DP & a good 2.75" dual exhaust,

2.) Then, a personal call to John Craig to tell him about your combo & your plans/uses for the car.

I reallllllly like the JCraig 61's, too.

HTH

 

[azgn]

I agree with two lane....talk to John Craig at Limit

If you really want a low 11 sec car, you'll need to upgrade the converter, or you will have unacceptable lag and lousy performance .....just a necessary part of the combo

a downpipe & exhaust should come before anything else......to go faster than mid 11's is where you start to get expensive!

Try maxing out your existing combo (as I say, 11.6-7 with a TA-49 and Blue Tops is very common) and you may be happy there (and a whole lot richer!)

 

[Mr URL]

Originally posted by Awesome T
Hey S.B,
Interesting question about the 50's locking up. I run 009's, so no personal experience with them, but I remeber Jim Haas posting results of tests on the 50's and them locking up. Jim has a company dealing with engines and horsepower, and has flowed them to the point where they locked up - around 85-90 psi. He recommended 55's instead, but it seemed no one paid him any attention. Jim puts on the Buicks at Bristol event, and knows quite a bit about these cars, and automobiles in general. I think his post on the subject was lost in the Big Crash of the board a year or so ago. HTH.

There is no problem cause nobody would ever try running injectors at 85-90 psi static fuel pressure. If that's the case then you needed injectors long time ago. Doesn't matter how much boost you run it's what you have set as static pressure with vacuum off. Our fuel regulators are a 1 psi per 1 psi under boost. So no matter what boost level it will still be whatever static fuel pressure you set it to against the injector.

 

[southern boost]

hey az ,I have all intentions of maxin my combo out, but i would like to get my car in the mid 11 and lower year around. This why i'm aimin for low 11 i figure i can get to this point that my car will run mid to high 11 mid summer in the heat . thanxs for the advice randy

 

[c&cgn]

If you want to run mid-low 11's year round without kicking the crap out of your car I would suggest a combo similar to mine, and then add ported irons and a cam such as a 206 or 208. That will make it easier on the car and more reliable as well. You could sub the TE61 for my 52 if you wanted, I believe they are almost the same turbo.

 

[dconnor]

Here is the meat & potatoes of my TR's build-up which has recently gone a new best 1/4 mile of 11.43 @ 119.6 mph w/a 1.62 60 ft. (10lbs of boost footbrake launch & 23~24 lbs of boost through the traps.) Still messing around with a street chip & xylene homebrew so 10.8's should be realistic once I step it up to a race chip & C16.

********

CPP Competition shortblock: stock block, new stock crank, CPP spec 206 cam, 9:1 forged pistons (Venolia), billet caps on the centers, Race Jace engine girdle and everything smoothed, balanced & blueprinted

Stock heads freshened up with new springs etc... & 3 angle valve job

Ported stock intake & modded doghouse w/ 65mm throttle body

50# injectors (w/ matching CPP street chip burned for my combo)

TE-61 turbo w/ PTE .63 exhaust housing

Terry Houston downpipe into a 2 1/2" hooker exhaust

Action Fab "stretch" intercooler

S&B air filter / homemade cold-air kit flowing into a solid MAF pipe

HR PartsNStuff poly driver's side motor mount

Mike Kurtz built tranny w/ 3200 rpm 9/11" converter

Stock 3.42 w/ 28 spline Moser axles & c-clip eliminators

HR PartsNStuff lower & upper rear control arms

Mickey T, 28-10.5-15" slicks

What is the stall rpm on your converter?? The te-61 is VERY streetable on my car, spools faster than the stocker ever did & will hit max boost about 2/3 of the way through your average 4 lane intersection!

Doug C.

 

[ross87t]

Originally posted by dconnor
Here is the meat & potatoes of my TR's build-up which has recently gone a new best 1/4 mile of 11.43 @ 119.6 mph w/a 1.62 60 ft.

Damn Doug!

You need to take that thing out, and lay the smack-down on some of these heads/cam LS1's running around in our area.

Ross

 

[southern boost]

hey guys apperciate the info ,but one more Q how do you guys get your not to creep through the lights on foot brake. I have up gradin my brake system has we speak and hope this does the trick ,but any tips would be helpful thanxs randy.

 

[Awesome T]

Actually, the 50's locked up at a lower fuel pressure, I just don't feel comfortable posting the numbers because I can't refer to the article to confirm. But, it was at a fuel pressure/boost combo attainable in our cars at the upper reaches. I just don't want to talk about something in concrete detail when I can't reference the source, except by contacting Jim directly.

 

[CraigT]

My signature time is on MSD 50's with 50 psi static and 26 lbs of boost, I can't remember my EGT at the time, but is wasin the normal range. I tried to turn up the boost, but the Wg wouldn't raise it for some reason.

 

[Doug Jacobson]

My combo and tune is in the sig. I was running 48 psi static fp and 32 psi boost and was way over the limitss of the injector (120% pw) I didn't see any indication of them going haywire. I did notice the need to install a double pumper.

I would also stay away from the 50 series turbos and go with a 61 or 62. My 52 grenaded after getting home from the track the same day I ran the number below. I'm going to step up to a 45a now since I have enough convertor for it, maybe you should think a little bigger too since you have the convertor to handle it.

 

[southern boost]

hey doug thanxs. Hey what kind of boost did you leave the line on this is where i have problems. I feel if i could get my boost off the line up i could run a decent 11 sec pass workin on brakes know, but thanxs for the advice

 

[Mr URL]

Originally posted by Awesome T
Actually, the 50's locked up at a lower fuel pressure, I just don't feel comfortable posting the numbers because I can't refer to the article to confirm. But, it was at a fuel pressure/boost combo attainable in our cars at the upper reaches. I just don't want to talk about something in concrete detail when I can't reference the source, except by contacting Jim directly.

It's not 48 psi static + 32 psi boost = 80 psi against the injector.

It's 48 psi static + 32 psi boost = 80 psi fuel rail pressure - 32 psi boost pressure = 48 psi actual against the injector.

If you have 80 psi (or whatever psi it locks up at) static pressure + ANY boost = lockup.

Most people run static fuel pressures in the 40 ranges. If you are running enough static pressure to lock them up you definately need bigger injectors. I have never heard of anyone ever that has locked up MSD-50's in a real life situation on their car.

 

[turbov6joe]

If your concerned about how well it spools on the street, any 60 series turbo might be too much unless you have a loose converter...but there the streetability issue is back. I like the TE44, and it will take you into the high 10's. It spools quick and will support 500+ hp which is good for high 10's low 11's easy... HTH