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LSX 454 update

 
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boosted



Joined: 04 Jun 2009
Posts: 378

PostPosted: Mon Jun 24, 2013 7:59 am    Post subject: LSX 454 update Reply with quote

Just some info the guys thinking of making the move from cx or just wanting something a little faster than the cx class.
Two of use ran the lsx454 in the Rat 200. Both started and finished every leg. So far I can't say enough things about the motor (and I'm a Ford guy). power was smooth and consistant. Acceleration is much stronger than cx class with top speeds in the range of 5-7 mph faster. So so far its looking to be dependable engine.

I would also like thank all the people that were involved in putting the Rat200 this year. An amazing job.

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shallowman



Joined: 03 Apr 2006
Posts: 199

PostPosted: Thu Jun 27, 2013 11:34 am    Post subject: lsx 454 Reply with quote

that motor sounded so good when u were flying , thats one thing about a crate engine almost impossible to beat them as far a reliability , engine builders try but those motors never last more then a couple miles , most of the time , some do most don't ,


stirring the pot , Cool
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boosted



Joined: 04 Jun 2009
Posts: 378

PostPosted: Mon Jul 15, 2013 8:34 am    Post subject: Reply with quote

Once again both Lsx 454 engne started and finished every leg of the Peace River race. My engine ran perfect the whole race as I think Jay's did as well. I think that it actually runs better than the ct525(if thats possible).
For those who were there and were wondering about the Batmoblie blue smoke screen I was leaving on the right hand corners of the first leg. It was only my homemade valve cover baffle that obviously didn't work very good. It sucked through a liter of oil into the panovac on that leg. Plugged it off and never used any oil on the rest of the legs.

Anyone on the fence with there Cx boat could change to one of these in a weekend easily.

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boosted



Joined: 04 Jun 2009
Posts: 378

PostPosted: Wed Jul 17, 2013 9:09 am    Post subject: Reply with quote

Here is a little background on what we are doing in A class for those who see the times but are wondering what is going on.

The one A boat 399 is an A spec engine 565 ci detuned to run av gas. They are still working out the bugs for reliabilty. The power levels are north of 800 hp though and as you can imagine the price is north also. We agreed to run the A spec engine in the same calss as the lsx454 for a season to let the people decide so to speak what engine group will remain. The A spec powered boat would have been alot faster if Dale had had any setup time for it. It out accelerated me but really no difference in top end this race. The A spec engine went down 100 yards before the finishline on the third leg. So no it is really not a fair class this season but we agreed to it for the experimental purpose. There has been two A spec powered boats A399 and A273 and two lsx454 boats mine A242 and Jay Grahn A218. Jay and I are ectremely close in both acceleration and top speed but the bugger can outdrive me but I get lucky lots. Lol

What we really need is for people to make the comittment to either move up from cx class or just get in the class. Basically it is going to be the people that show up with what engine that will decide. I know of 3 people setting up lsx454 boats right now. All of them experienced racers so that will make 5 at least just in Canada. Some may even be ready to compete before the season is out.
As for me I have run fx, A , B, and cx class in the last 6 years as Jesse Fosters Nav and am back driving A class for this.

Mark

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Arthur
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Joined: 28 Oct 2006
Posts: 1654
Location: On the rocks

PostPosted: Wed Jul 17, 2013 9:30 am    Post subject: Reply with quote

I personally like the LSX option. Its at a dealership or a week away tops, and if your clever, you might be able to get GM warranty if yours was assembled the day before cinco de mayo. It's not quite the top speed numbers we were looking for, but cost and reliability are what's key in my books. Another tidbit...

Stepping stone from 'CX' to 'U' is too big...they were hoping to find a reliable, affordable fair 120mph class...

From the hip...

CX avg-100mph
LSX avg-110mph
A-Spec (hoping)-120mph
U-140mph

Your right about Dales lack of time with the boat, he put countless hours in the week before to help out the decision and class. His set up was not there and he drove with his Canards holding him down all weekend. But man did it look and sound good. Not to sure about his top numbers tho....

If you guys wouldn't have pooched the start on that one leg the numbers are not that far off....although when Dale gets it dialed in it will be another story...


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boosted



Joined: 04 Jun 2009
Posts: 378

PostPosted: Wed Jul 17, 2013 11:57 am    Post subject: Reply with quote

Yup with all the confusion at the launch when the cx boats started loading I got held up for a minute or so. I was 45 sec late getting to the line. My time would have been 15:38 for that leg. I should have been smarter and launched before the cx boats started coming in.
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Arthur
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Joined: 28 Oct 2006
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Location: On the rocks

PostPosted: Thu Jul 18, 2013 9:33 am    Post subject: Reply with quote

It was mass confusion on the shore watching for a bit....the first CX was over and there were a couple guys that kept going. Racing appeared to be taking place while the second CX was doing there sight lap. The 'A' come around and Dale is the only one who showed up 1 min from the start, with you and Jay a min or less behind. I almost think 45mins per race was needed, but that would be tight for 'U' if there were any breakdowns.
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Crash



Joined: 21 Jul 2013
Posts: 4
Location: Lewiston, Id

PostPosted: Mon Jul 22, 2013 7:28 pm    Post subject: Reply with quote

So I have a few questions. I am looking around at putting together a boat and I was really thinking about the A class but know is it going to be another crate motor class? Then the spec motor is it going to be that anybody can build it as long as it stays in spec or is it going to pertain to a certain builder to build all the motors? Then are we ruling out building a mean 468 with as much hp as possible. Thanks .
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Itsworthit



Joined: 15 Jun 2005
Posts: 432
Location: Whitecourt

PostPosted: Mon Jul 22, 2013 8:50 pm    Post subject: Reply with quote

First off, this LSX/Spec engine is an experiment in Canada only, as far as I know, and as it stands right now, the spec motor cannot run A Class in any UIM sanctioned event, it has to run in Unlimited, the old A Class rules are still in place, and there has not been any talk of removing the high hp 460 cu in, the spec motor was brought to the table to provide a cheaper and more reliable way to hit the 120mph marker
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Crash



Joined: 21 Jul 2013
Posts: 4
Location: Lewiston, Id

PostPosted: Mon Jul 22, 2013 9:38 pm    Post subject: Reply with quote

Hey thanks, I was trying to find the UIM rules. I really appreciate all the info.
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MISSBHAVEN



Joined: 20 Jun 2005
Posts: 310
Location: Grande Prairie, Alberta

PostPosted: Tue Jul 23, 2013 9:05 am    Post subject: Reply with quote

Crash wrote:
Hey thanks, I was trying to find the UIM rules. I really appreciate all the info.


Here's the 2013 UIM Rules, look under "2013 Circuit Rule Book", Section 900, page 374.

http://www.uimpowerboating.com/vsite/vnavsite/page/directory/0,10853,4916-152014-169230-nav-list,00.html

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boosted



Joined: 04 Jun 2009
Posts: 378

PostPosted: Sun Aug 11, 2013 7:59 pm    Post subject: Reply with quote

Ok well Jay and experienced piston failures at Whitecourt. Here is what I found.
Pulled the engine apart to have a look and yup a hole in number 2. Also found cracks in 4 others. Other than that the engine looks new. Pistons are available and are not expensive from GM. So well get em coming and get it together.
My tuning screw up was because when we dynoed the motor the density altitude was 5500 ft. 28 degrees of timing was good for that and showed best power as well that is what GM recommends for maximum timing. Well in all the races this year it has ranged from 2000 ft to 2500 ft only so 28 deg timing even with the 12.2-12.0 AFR that we were running was right on the edge of deto. We should have done more dyno work to find the limits of the tune before running them at WOT in the boats for extended periods. Looks like 26 deg is going to be the safe number for timing on these. Guess I'm doing the learning the hard way,haha.

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boosted



Joined: 04 Jun 2009
Posts: 378

PostPosted: Sun Sep 01, 2013 9:11 pm    Post subject: Reply with quote

Here is the latest update. Although Jay experienced a catastrophic crash and I had a major charging system failure both engines ran great. We backed the timing off some and went with a colder plug. Everything is looking great.
So on a side note the cost of repairs to the engines was actually fairly reasonable. The total for the parts for both engines was approx $3200.00. (1600.00)each.
We replaced all the pistons and bearings plus ended up buying a set of rods also because the holed pistons heated up the small ends of those rods and we didn't want to chance it. All parts that were used were factory GM parts.
Also the top speed that I was able to achieve was right at our goal of 115 MPH. Actually thought it would take more than a season to get there so it looks like we might even go a little faster yet.

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boosted



Joined: 04 Jun 2009
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PostPosted: Tue Sep 29, 2015 8:44 am    Post subject: Reply with quote

been awhile since I posted about the LSX engine. Most of you may know how things have been going if not here is the info I have.
We ran the 2014 season with predicted results regarding the engine. The factory piston just do not stand up to our style of racing. we had zero other issues with our engine and neither did Tim.I have looked at my pistons and they all look fine so I will run them again next season. Jay has not races the last two season as he boat is totalled but the engine is fine.

For the 2015 season I had a spec piston designed and built by Mahle. This is a drop in piston that does not require rebalncing or and modifications whatsoever. It is a direct replacement with the same comp ratio. I ran it for testing. racing the worlds and even ran another 45 gal of fuel through it on a family and sponsors fun ride day.

Rough cost on the pistons was $1500 cdn. Although there would be some extra cost get them swapped out it would be to bad as it is very easy engine to work on.

So for those of you that have been running cx and are looking for some more speed(115-118) without the big budget increase of the A spec engines this can be a viable option for you as all you mounts,starter, headers, ign, etc. Will bolt right on

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