NEW MOTOR FOR IMSA- HIGH RPM 345 SBC

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Postby mldeolde » Sat Mar 03, 2007 8:47 pm

THIS IS WHERE FANTACY MEETS REALITY- COMPUTATIONS INDICATE THAT AT A LITTLE OVER 8000 RPM THE CAR WILL SURPASS THE MAGIC DOUBLE CENTURY. I THINK THERE WILL HAVE TO BE A LOT OF AERO WORK INVOLVED TO GET THERE AND MAX POWER WILL DEFINATLY BE NEEDED. IT'S BEEN DONE WITH AERO DYNAMICS ON A NEWER CAMERO WITH LESS HP THAN THIS SO I BELIEVE IT IS DOABLE THO NOT A GIVEN. THE WHOLE CONCEPT IS TO SEE HOW MUCH WE CAN ATTAIN ON A VERY LIMITED BUGET USING EVERY CHEAP TRICK WE CAN MUSTER TO GET THE JOB DONE. AGAIN EVEN IF WE DONT MEET ALL OF OUR GOALS FOR ME THE SATISFACTION IS IN PUSHING THE ENVELOPE TO SEE JUST WHAT CAN BE ACCOMPLISHED WITH "NO BUGET RACEING" AND OUR VERY LIMITED ASSETS BUT TALENTED ENGINE MAN AND FABRICATOR. :wink:
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Postby SWT Racing » Sun Mar 04, 2007 1:00 am

Sounds good to me!
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let the porting begin!!!!!!!!!!!!!!!!

Postby mldeolde » Sun Apr 01, 2007 10:22 pm

WELL FINALLY GOT MY HEADS OVER TO MY BROTHER FOR SOME MAJOR PORTING WORK AN TO PICK UP MY NEW STAINLEES STEEL POILISHED DASH PLATE. :D NOTE ALL THE RIDGES IN THE COMBUSTION CHAMBERS. THESE WERE WHAT IS KNOWN BY BRODIX AS SPECK HEADS FOR A SPECIFIC CLASS OF RACING WHICH DOESN'T ALLOW ANY MODIFACATIONS TO THE HEADS SO THE MACHINED INTHESE RIDGES INALL THE PORTSAND CUMBUSTIONCHAMBERS TO MAKE ANY TAMPERING EASYILY NOTICABLE. THESE WERE GOING TO BE MAJORLY PORTED SO THEY WOULD BE GOING ANYWAY SO JUST AN ADDED AGRAVATION BUT NO BIG DEAL. SORRY MY PHOTOS AERN'T THAT GREAT ,DO BETTER IN THE FUTURE.
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a few more head pics

Postby mldeolde » Mon Apr 02, 2007 9:08 pm

just a few more head picks shot durring the porting procedures by little brother Chris------------my1 race used titainium valves showed up to day and they look as close to new as you can get. they should be an outstanding addition to my new valve springs,NASCAR,dino time only springs and retainers. as you may notice i am getting a little bit jazzed seeing things really coming to gether now. :D :D :D
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finnished product-exhaust ports

Postby mldeolde » Mon Apr 09, 2007 12:51 am

finnished porting saturday afternoon. here are pics of exhaust ports. found several casting flaws in exhaust ports,bummer, but brother says will only cause minimal obstruction to exhaust flow , not to worry. :roll: now onward to the intake manifold for more major port relief. my brother says to go with the flow and i think he would know!!!!!!!!
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wow

Postby Xethur » Thu Jun 14, 2007 10:15 pm

i'm impressed. i like to go fast but your nuts. my speed addiction is more in acceleration and corners. i give you props though, someday i would like to see two hundered. oh and i taking a guess here, so is a 345 a destoked 400? i've heard of a 377 but never a 345. well good luck. let me know how it turns out.


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Postby mldeolde » Sat Jun 16, 2007 1:34 pm

yes it is actually a really destroked ,30 over,400 block with a old NASCAR style 3.18 stroke 4340 chromashaft crank, 6.29 billet aluminum rods and ultralite Mahale coated pistons, comp cams mechanical roller cam and thier enduro lifters. also a helleashishly ported set of Brodix Track-1 spec heads.not the latest technology but worked to the max to get the most out of them that is possable and these really are great heads to start with tho not as well known to guys as some of the other brands that every one uses for street and drag cars today.
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Re: NEW MOTOR FOR IMSA- HIGH RPM 345 SBC

Postby mldeolde » Fri Aug 08, 2008 10:39 pm

here are a few pictures of test fitting of parts in the new Bowtie block. :dance: :dance: :dance:
HPIM0488 (568 x 428) (284 x 214).jpg
HPIM0489 (568 x 428) (284 x 214).jpg
HPIM0490 (568 x 428) (284 x 214).jpg
HPIM0491 (568 x 428) (284 x 214).jpg
HPIM0492 (568 x 428) (284 x 214).jpg
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Re: NEW MOTOR FOR IMSA- HIGH RPM 345 SBC

Postby mldeolde » Sat Aug 09, 2008 12:36 am

lets see if i can get the pictures bigger-------------- :|
HPIM0488 (568 x 428) (284 x 214).jpg
HPIM0488 (568 x 428) (284 x 214).jpg
HPIM0488 (568 x 428) (284 x 214).jpg
ok thats a little better :)
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Re: NEW MOTOR FOR IMSA- HIGH RPM 345 SBC

Postby NixVegaGT » Fri Aug 15, 2008 8:47 am

Exciting update, Bruce! Sorry it took me so long to see it. That is some hot motorhead porn right there. So the engine dyno must be right around the corner? Since I'm fabricating headers I'm a bit fixated on them at the moment: Do already have headers for it? I am assuming the revised port shape might change your header choice?
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Re: NEW MOTOR FOR IMSA- HIGH RPM 345 SBC

Postby mldeolde » Fri Aug 15, 2008 9:46 pm

NOPE !!!!!!!!!!! everything still fits the headers. just barely i think tho... it is such a relief to have a block that is guarenteed to take anything i can throw at it. with the full ARP head and main studs upgrade its good for at least 1200 hp and i'll only be doing 1/2 that so as our AUSSIE friend would say,"NO WORRIES MATE". can you believe it ? in all our years of engine building have never had a real race block to work with. lets see -1965 to 2008 thats 43 years of nothing but factory blocks. i guess it was about time!!!!!!!!!! :dance:
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Re: NEW MOTOR FOR IMSA- HIGH RPM 345 SBC

Postby Hauge » Thu Aug 21, 2008 11:24 am

Be sure to make a recording of the sound of the engine and share it so we can all have an orgasm.

But there are to things i react to or makes me thinking
1: Alu rods with that rpm ..thinking of fatigue issues.. piston accelleration should be lower with that short stroke, but anyway.
2: Chain drive... would it not be better with some kind of gear drive ???
-76 Monza 2+2, 400", 8.8 rear ... if Ispell funny sometimes, Its because I´m Swedish and Hauge is a Norwegian name
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Re: NEW MOTOR FOR IMSA- HIGH RPM 345 SBC

Postby mldeolde » Thu Aug 21, 2008 6:32 pm

the rods are made for high rpm operation specifically and to lighten the rotating assembly to promote that. at 6.29 inches that also eases the stress and promotes power production at higher rpms without the weight of a forged steel rod and the stress that makes on the crank. the hp i will be generating, tho pretty substancial, is still only half of what the design capability of these rods is . asside from having to provide more piston to valve clearence there is no problem with the endurence durability in the intended application of limited street duty and some track time ocasionally when available. the timing chain issue is a lagitimate concern but i am not inclined to run a gear drive due to friction and possable harmonic transference. i am really hopeing to get a belt drive timeing set up eventually as that is the prefered system to run in an engine with the type of high rpm potential that this engine is built to deliver. definately" NOT" being made out of money that purchase has been delayed untill either a great deal or more money becomes available. i am still constantly looking for one tho as it is the best insurence you can get in the integrity of the valve timing in an application like this.
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Re: NEW MOTOR FOR IMSA- HIGH RPM 345 SBC

Postby mldeolde » Tue Oct 14, 2008 7:06 pm

some picture of the new 345 cu in 3.18 stroke,6.29 billet rod,Mahale pistoned,Brodix headed bowtieblock that i am truing to get finished. :| :dance:
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Re: NEW MOTOR FOR IMSA- HIGH RPM 345 SBC

Postby mldeolde » Mon Dec 15, 2008 5:56 pm

after trying in vain for months to get a good condition belt drive "like new" for next to nothing ,and having my brother giving me hell about not useing a gear drive on the new motor for all those months ,i gave in when i found this gear drive on E-BAY that i didn't even know was in existense. it's MILODON # 12000 competition gear drive and uses a single idler gear instead of the common double idler gear set ups. they claim no power loss from this kind of system and better timing consistency than eighther double roller chain or even belt drives. i checked on Summitt Raceings site to verify a few things and found thier price to be over $500.00 plus the $10 or $11 for shipping which is to say the least very reasonable. well the guy was willing to take $275.00 and it is brand new , still in the package, as the picture clearly showed. so i couldn't resist and bought it. i justified it as my Christmas present to myself and to get my engine builder brother off my case.. here i go again going a little against the norm by useing a gear drive instead of a belt drive in the little high rev 345 cu in extreeme long rod screemer . hope it's as good as they say it is. we shall see. another hurdle jumped. getting closer to finnishing this one of a kind engine combo------------------------ :dance: :dance: :dance:
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