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Author Topic: 44CID Intek  (Read 46932 times)
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larry crouch
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« on: January 06, 2008, 02:25:18 PM »

George, Don, Just took a 44CID Intek apart and the pistons were cupped
downward like a 35 or 38.5 Vanguard. Does Briggs make a flat top or domed piston for these? Also cut heads to around  .0080 is that enough
considering the heads are open chambered and not closed?
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« Reply #1 on: January 06, 2008, 02:34:03 PM »

Briggs doesn't make a flat top. NOW what we need is a longer rod and we can cut the pistoon as we do with the Vanguard (hint hint TOM). Course one can always go to Wiesco or some high end piston manufacturer and have custoom pistons made. We are building a 44 at EC and its heads are cut more than .080. Its a customer motor so I cannot reveal the exact amount.
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George Herrin #6
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larry crouch
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« Reply #2 on: January 06, 2008, 02:51:04 PM »

You can get the piston with no wrist pin holes, but you have to be perfect when you get them machined. Ronnie from Cheraw S. C. builds motors for a multitude
of racers in all kinds of racing gave me the company's name but I'm not sure if i'm smart enough to to get the pin in the right place.
Since I opened this can, if you cut the heads more than a 100 do you change push rods because of the rocker angle. Performance V-twins say's you need to. I'm a little out of my league when it comes to rocker angle. Anyway you have so much room in the heads for shaving who knows when it's enough.
I think you could make it a closed chamber with a little fill in by a good welded.
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« Reply #2 on: January 06, 2008, 02:51:04 PM »

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George Herrin
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« Reply #3 on: January 06, 2008, 03:25:34 PM »

When one shaves an OHV yea rocker geometry is an issue. And to correct that yes it requires shortning the push rods. With the intek or any other V-twin the bigger issue with shaving heads is still getting the intake to fit correctly. Keep that in mind. Also understand compression by shaving heads is not the key to making horsepower. FLOW is where its at in heads the carb, and the exhaust.
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George Herrin #6
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« Reply #4 on: January 08, 2008, 09:15:05 AM »

Ok Here is my question. Why?
I mean all I read is Flow flow flow. Then I hear shave heads .020 to .150 on all the Briggs motors out there.
So what gives?
If the piston is dished so what?
I am not being mean here but I am so comfused. I watched the Stabil finals last night again. I watch the BP class and watch Robert Sparbel finish 8th. No biggy right.
I also know I finish 6th in Mendota IL last year too. So................
It is not that my motors are not fast. It is not the chassis either. Sometimes it just comes down to the start and when you start 15 or lower and end the race 6th or 8th that means something too right?
What I am getting at is that is with Inteks with the Heads NOT shaved. 8:1 motors running with all these guys that cut and cut again.
This is with a 90% stock motor. No valve changes and nothing wild.
Simply a good strong build.
There is much to talk about the swirl that happens in the cylinder and there is Vortec ideas and all too. Snowmobile guys know alot about this too. The sqwish if the fuel and air is very important and how it is done is important too.
Knowing sqwish and how it works can yeild much mower then shave shave shave ever will.
So what I am reading is this. If I shave my heads I will be #1??? Why is it always come down to one or two things will kick someone's grass??
Again sorry that this message sounds a bit off. I am a bit crabby this morning and mostly just confused. It is not that I don't know what the answers are I just don't understand how folks come up with what is the winning thing.
Again Sorry
Don
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« Reply #5 on: January 08, 2008, 09:57:44 AM »

Its all about finding the right Combonation!!!! It takes a complete package not a single thing!!!
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George Herrin #6
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« Reply #6 on: January 08, 2008, 11:47:02 AM »

Don, I'm not sure how you took the questions that I have asked about the 44CID Intek but in no way was anything pointed toward you or your engines. I ran a 40CID Intek this past season and was pleased with the outcome. I would say 90% of the guys at Ellerbe that run in the class we do run
Inteks. The deal is I broke a crankshaft the last race of the season in Georges race in Tenn. It ruined the block. I have purchased a 44CID that I'm going to build for 08, hince the questions. If I'm going to
spend $2,000 in an engine and extra $100 in head work is a small price to pay while the engine is apart.
As far as the pistons, we cut them to flatten them out on Vanguards so I assumed you would try to
do the same thing with an Intek.
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« Reply #7 on: January 08, 2008, 12:29:24 PM »

That is interesting to hear that the crank broke, was it the crankshaft that failed or was there another cause? also where did it brake?    thanks,   Ryan
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« Reply #8 on: January 08, 2008, 01:08:39 PM »

It broke due to dirt ingestion due to the fact it only had a panty hose for an air filter for a whole year. ANd trust me when I tell ya the Crouches twist a motor for everything they worth. LOL But ya gotta love em.
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George Herrin #6
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« Reply #9 on: January 08, 2008, 05:32:06 PM »

Hey Don,
Good points you make but let's not leave out the very first time my BP hit the track at the National race in Morris MN. In the heat I finished 2nd right behind Jayson Mikula and in the Feature I finished 3rd right behind Jim and Jayson Mikula. I know 1st is where everyone wants to be but I would say that is a darn good showing for a motors first night on the track. As for Ohio I think I started 15th or 16th and worked my way to 8th, for having 20 BP's on the start grid I can't complain about that either...
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« Reply #10 on: January 09, 2008, 08:28:24 AM »

Hey Larry,
Nothing bad taken nothing bad ment.
What RPMS do you think you need to turn? What were you turning when it broke?
$135 gets head work from me. Shave the heads a little and spring and retainers and keepers and port work.
No need for anything else. Heads, cam and carb work I do turn to 7,200 rpm with tons of power all the way there. I hit 8,080 rpms on some missed shifts with no damage.
Sure there is more a guy can do to any motor but the basic question is why? Why does everyone think 1,500 to 7,200 rpms is not good enough? Briggs balanced cranks in twins are good for 6,000 generally and anything above will weaken them.
Same goes with the singles. I balance them to 6,000 rpms also. Most guys turning way above that all the time will break them.
So goes it with Automotive motors too. Crazy Harmonics happen to all motors above 6,300 rpms.
Again not mad or whatever. Not trying to censored things up a bit either.
You have to understand I watch the races on TV and I watch the races at the track and I watch what folks do with motors and their finish too. Why better feed back then a dyno this is. This is real world feed back.
Just wondering..........................................
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« Reply #11 on: January 09, 2008, 11:08:15 AM »

I agree with George it takes the whole combo & differant combinations work for differant people & no two will be the same.It's hard to build two alike & they turn out the same.As for a dyno there great for tuning,trying differant combos & even breaking one in but I have yet had one to pass me on the track.These drivers got to understand it's not all motor,it takes good driving,good set up & even some luck helps.Yeah a good motor helps with all that,but I've seen good motors on poorly set up mowers & they ran last,karts too.It seems like everybody wants to know how much hoss power you can get with them on the dyno & again dynos are not the same I use a hydrolic & an inertia one that even shows torque.Well thats my 2 cents worth.
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« Reply #12 on: January 09, 2008, 12:45:10 PM »

Anyone wondering what sqwish is, can search google for "quench". Probably have to add piston or cylinder to the search words. With long rods and shaved pistons my vanny has quenched it's need for quench.

And what about Velocity, need a little of that to go with the Flow smile



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George Herrin
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« Reply #13 on: January 09, 2008, 01:38:20 PM »

Don't complicate it too much I might get confused.   doh Evil
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George Herrin #6
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« Reply #14 on: January 09, 2008, 02:08:20 PM »

.. the quench squished the mixture..

ok I'm done.
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