Author Topic: Holset HX52 DSM= 816hp/569tq@38psi  (Read 10556 times)

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Offline biglady112

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Holset HX52 DSM= 816hp/569tq@38psi
« on: June 16, 2012, 08:44:03 AM »
After a rather disappointing trip to Ohio in April for the Ohio Mile we started getting ready for Speed Week early. I knew we were close with things, we just did not get enough runs to get the last of the kinks worked out. We got three runs total and only one run were we could get into 5th gear.

We came home on a mission to get ready and get this car to where we knew it could be. It has been a rough five years, but we have had a feeling all along this year would be the year we claimed at least one if not both of the Production Supercharged records that we are chasing. The F motor class which is 2.01-3.00L and G motor class which is 1.51-2.00L.

We did the math in the land speed calculators and to claim the records the calculators said we needed 720-730hp to reach our goals. So we went in with a goal of 700hp or so and would adjust from there once we got to Utah, IE-turn the boost up during a run if the GPS display did not say a certain MPH by the 3 and 4 mile markers.

Well, right off the bat we exceeded our goals with the first pull being 775hp. Boost was 38psi so we decided to go from there and just work on getting the car a bit smoother. Well upwards of 15 runs later we were able to smooth it out nicely. After a plug change to BR9ES' we were able to get our EGT's to acceptable levels and start leaning on it. We had three runs after the swap but could not seem to tune around it breaking up. We took the plugs out and gapped them down to .018". The very next pull is what you see below. 816hp. And it pulled smooth as could be to 9000rpm.

We came into today with a goal of running the car over 200mph after the flogging to see if the motor would hold together and to see if our new re-engineered water and oil paths through the motor were going to work and be successful. That and see if this head gasket would stay intact with all the oil and coolant ports blocked off on the deck of the motor and cylinder head. We made it to 210mph before we figured that was enough and after 15 runs it was clear the new engine program was a success.

As I said, it took 5 years, but I think we are finally ready. We are gladly accepting sponsorships for cams and intake manifolds to prove their gains and see if this Holset is worth 900hp. With the way things work out at the Salt, we feel we have 30-50hp left in our configuration if this car was a drag car. We do have to dial the timing back a bit and run a ton of fuel through the motor in order to keep head gaskets in the motor for 5 miles at a time.

Here we come Bonneville.

1991 Eagle Talon
Off the shelf Wiseco 8.5:1 pistons
Off the shelf Manley H beam rods
Used Holset HX52
Stock intake manifold
Crower 413 cams



http://www.streetfire.net/video/816hp-1991-eagle-talon-tsi-6142012_2388006.htm
1947 Dodge Pickup

Offline hotrod

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #1 on: June 16, 2012, 11:20:53 AM »
Very nice numbers there!

Given temperatures and barometer yesterday those dyno pulls were run in air similar to (actually a bit worse) than what you will likely see at Bonneville when you get out there.

Good luck guys!

Larry

Offline biglady112

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #2 on: June 16, 2012, 12:32:03 PM »
Thanks Larry. We are hoping this is the year we can make some noise. Looking for 240mph. 230 at the least.
1947 Dodge Pickup

Online jl222

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #3 on: June 16, 2012, 12:41:57 PM »
  Lookin good :cheers: Tough compitition in your class Raven -Cochran at 224 mph +  :-o

  BUT.. I inputed 750 hp and 813 in my Bville Pro computer program, I used the data for our camaro CD-.3 and frontal area 20.5 sq ft and changed the weight to 3500 lbs also changed gearing to 3.1 for our 91.4 in. rollout
tires.

 750 hp  229+ mph

  813 hp   335 mph

   If your CD and frontal area are better than the Camaro :-)

               JL222

Online jl222

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #4 on: June 16, 2012, 06:57:24 PM »
 Lookin good :cheers: Tough compitition in your class Raven -Cochran at 224 mph +  :-o

  BUT.. I inputed 750 hp and 813 in my Bville Pro computer program, I used the data for our camaro CD-.3 and frontal area 20.5 sq ft and changed the weight to 3500 lbs also changed gearing to 3.1 for our 91.4 in. rollout
tires.

 750 hp  229+ mph

  813 hp   335 mph

   If your CD and frontal area are better than the Camaro :-)

               JL222

  Oops... make that 235 mph :-P  Thanks Stan :cheers:

  Hey, I was distracted on way to sign contract to build our new house 8-)

    JL222

Offline kiwi belly tank

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #5 on: June 21, 2012, 10:03:21 AM »
Good to see some stout $hit without spending a swillion dollars, thats why I like turbo's. :cheers:
Are you planning on running those fat tires sticking out in the breeze?
  Sid.

Offline Avanti Kid

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #6 on: June 22, 2012, 01:48:21 AM »
With those hp numbers you should be able to do 230 mph! sounds like you'll be having a great race at Speed Week, I will be doing the timing on one of the 4 race courses, have a safe race, check all your safety items twice!! Dave
Original owner of 1963 Avanti; Age 84
2006 Bonneville 200 MPH Club Member
Canyon Country, CA
215.6 mph 289 CI Studebaker engine

Offline biglady112

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #7 on: June 22, 2012, 09:20:02 PM »
Thanks Dave. This is a long course car. 5th or 6th season. So our program is down pat and not too many surprises.

This car run LSR Goodyears all the way around. Kind of hard to hook up on a chassis dyno with 4.5" wide tires and 800hp in a front wheel drive car.
1947 Dodge Pickup

Offline kiwi belly tank

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #8 on: June 24, 2012, 12:27:33 AM »
Good choice on the tire thing but not a silly question. You can still see cars rolling out to run the salt with circuit slicks on them.
I hope everything goes well for you at SW. I don't believe in good luck, only good management.
  Sid.

Offline bvillercr

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #9 on: June 24, 2012, 11:36:40 AM »
Good choice on the tire thing but not a silly question. You can still see cars rolling out to run the salt with circuit slicks on them.
I hope everything goes well for you at SW. I don't believe in good luck, only good management.
  Sid.

Are you bashing circuit slicks and their effectiveness?  Oh wait, the next thing you will say is that they hydroplane on the salt.  I wish I had a list of non-open wheels vehicles that use them so I can compare speeds with the tradition skinnies.  I know for our category, doorslammer; there isn't a car that I know of that has gone faster at the 3 than ours.  Nice build, sorry to hijack. :-D

Offline Steve Walters

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #10 on: June 24, 2012, 12:59:32 PM »
Why do you have to lambast everyone that says narrow wheel, and tires, myself included?  We get it you are passionate about your wide tires, and you are intitled to your opinions.  After reviewing your many posts, I would say that no one has more posts about the subject than you.  I would also include that no one has more posts about getting loose, spinning, and taking out mile markers than your car.  I'm not trying to start a war, cause you are really good at post wars.  Its just that if anybody posts their opinion about tire width, you will be the next post, almost gaurantied.  Sid has been in the racing busness for many years has worked on many record holding teams, and has built many eye popping Hot Rods, I would say that his opinion holds weight. 
 :cheers:

Steve     
I've been from Bone to Blackfoot, but still just a Newbie here.

Wa's Bad Banana
B/CGALT

Offline kiwi belly tank

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #11 on: June 24, 2012, 02:08:54 PM »
Jesus mate, take a breath!
 You appear to have the desire to turn a mole hill into a mountain. I don't need some hot head putting words in my mouth. I also don't care what you run on your car, it's your car, do what you want.
If I have an opinion on something, it's just that, to be taken or discarded.
If you want to whine about something, send me a PM & I'll be sure not to reply & stay out of this guys bad a$$ thread.
  Sid.

Offline bvillercr

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #12 on: June 24, 2012, 03:36:19 PM »
Guys, I'm not bashing any skinny tires.  But it seems like the last two post are bashing the wide ones.  And yes I guess I am passionate, because everyone seems to think they don't work and who ever uses them are looked as either crazy or an idiot.  As far as spinning, we did have some problems the last two years.  One because of driver error, the second because we didn't check the alignment after the first.  I did apologize for the hijack, have you for your rants? 

Online jl222

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #13 on: June 24, 2012, 04:39:10 PM »
Thanks Dave. This is a long course car. 5th or 6th season. So our program is down pat and not too many surprises.

This car run LSR Goodyears all the way around. Kind of hard to hook up on a chassis dyno with 4.5" wide tires and 800hp in a front wheel drive car.

  Good luck :-D

          JL222

Offline Avanti Kid

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Re: Holset HX52 DSM= 816hp/569tq@38psi
« Reply #14 on: June 26, 2012, 12:59:45 AM »
Yes guys its OK to have different opions in our racing!! in my 19 years of Land Speed Racing the common questions always come up like:

  - Should I use open spool rear end or posi-traction?
  - Should I use wide or narrow tires?
  - Where should I put the ballast in my car?
  - Where should I mount my chute?
  - How much caster should I have for high speed racing?
  - How much toe in should I have?

  I thinks the anwer is to ask other racers who have succeded in records and try it out on your car, but each car is different so you need to fine tune all ideas, but be safe!!  Dave
Original owner of 1963 Avanti; Age 84
2006 Bonneville 200 MPH Club Member
Canyon Country, CA
215.6 mph 289 CI Studebaker engine