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Author Topic:   How realiable??
andykmod
Member
posted April 20, 2004 03:04 PM
355 roller with srp pistons,6 in scat rods w/ 7/16 cap screw and stock steel 1182 crank,i was kind of wondering what rpm range this stuff is good for,the crank kind of scares me being stock and might buy a midwest motorsports prowler 4130 or competition products 5140/4130 3.50 stroke crank if it would be stronger.i would like to turn around 7400 rpm


dirtbuster
Member
posted April 20, 2004 03:24 PM
Would prob hold up pretty decent. Id reccomend having the crank checked regularly for cracks but the other stuff sounds good. A 4340 would be best bet for longevity, but to put it into perspective we have a similar engine, same pistons, rods and a Scat 9000 cast crank and turn 7300 with it.


jonniet
Member
posted April 21, 2004 12:56 AM
Been runnung same combo at same rpm for 5 years now with only bearing ,oil pump and valve train maintanance ....no problems so far.


smayo964
Member
posted April 21, 2004 09:37 AM
Hey Andykmod. I was sort of in the same boat in trying to decide what components to purchase for the money, performance, etc. After discussing it with a couple really credible racers around here, I was really surprised to find out how cheap of engine they were building, making gobs of horsepower, and having them live season after season. Basically, cast cranks, hyp pistons, little better than stock rods, cheap balancers, etc. These were being run in modifieds between 6800 - 7300 rpm range. One guy told me the last (3) engines he built he didn't have more than $800 in them each. I found this out after spending $2k+ for my internals alone. Gave a whole new light to the direction of building engines, especially after watching these guys run up front consistently for several years and not knowing they were doing it with minimal funds.


dirtbuster
Member
posted April 21, 2004 10:16 AM
SMAYO,
Its nice to hear someone say that cost is less than what they thought. Everyone always assumes the front runners are always running high dollar stuff and so they go out and try to outspend them. When in reality its just a matter of finding the right combination of parts without overspending and haveing a good chassis setup to use the available power.


smayo964
Member
posted April 22, 2004 05:20 AM
Hey Dirtbuster, I agree with assumption part. I learned the economics of how cheap you can build an engine when running my street stock. I might have had $600 in each engine using all stock parts, except for the cam, and turned them 6,800 in a 3300lb car. As long as you never over heated the engine which stressed the pistons, they lived a long powerful life. When hearing and seeing the mods run, I quickly assumed they were putting vast amounts of funds into those engine. Some do, but man was I surprised when I found out you can do it economically. We're currently putting 1 together now $150- used completed engine, $175- linebore and bore, existing cast crank and forged rods (rods given from friend), and a $380 engine kit that includes everything you need minus valve springs. Can't wait to get this built. I could have built just about (3) of these for what I just spent on the forged internals.


cobb
Member
posted April 22, 2004 05:10 PM
i just got a quote from a place called maddogmotorsports, includes new scat crank, sir rods, pistons, comp cam, comp lifters, oil pump,basicly EVERYTHING you'd need to build a decent motor.....name brand stuff...$900 call these folks18007929984

[This message has been edited by cobb (edited April 22, 2004).]

[This message has been edited by cobb (edited April 22, 2004).]

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