Bottem end

[Charlie240sxt]

Ok Here in like 6 months i am plaining a rebuild for my car i was thinking I got my mind set on Ka-t and right now dont have all the cash to get everything what if when i rebuild I run N/A with the turbo 8.5 to 1 and ther rest of the bottem end on turbo just with out it for the 5000 miles brake in priod then go with bolting on the turbo and all that crap will this hert the motor in any way or is this kind of a good idea seeing that boost is stress on motors and stress is bad for a rebuilt one

What i am asking you guys think it would be ok to run Ross Forged Pistons 8.5:1 compressionRoss Piston Rings and Wrist PinsPauter Forged RodsARP Head and Main Bolts with out a turbo for 5000 miles I my head this would probly be a good idea

Sorry for the long post and no ..'s and mispells thanx

[Nathan]

Ross Forged Pistons 8.5:1 compressionRoss Piston Rings and Wrist PinsPauter Forged Rods

That's my exact setup...I'm planning on running very low boost (no boost isnt an option for me) for the first 1,000 miles to break in the engine, let the rings seat, and let the clutch seat...I cant see how waiting 5,000 miles to put the turbo on could hurt the engine, if anything it's a little excessive

[Charlie240sxt]

I just want it to last as long as it can Im 18 and droping 5-6k to get it all goin is alot of money for me but worth it I have had a ride in a 300rwhp 240sx and man cant wait

Hay didnt know it was you I am also charlie240sx from cardomain update your page i want to see that car goin or just send me some pics

[huguetpj]

Except for the rods that's my setup too. I've been breaking the engine in for the past 1.600 miles, just 400 more for the turbo :ylsuper

I'm pretty sure either way would be ok, no turbo or low boost. Try not to rev the motor much so the rings can seat. Now the question is... with turbo, can you keep yourself off the throttle for 2k miles?

[Charlie240sxt]

Hell no thats why the turbo goin to stay off my car till 5000miles lol

[Nathan]

Good call, I'll update that page tonight with the parts I have as well as some detail pictures of the Ross Pistons The rods dont come for another week

[huguetpj]

Hell no thats why the turbo goin to stay off my car till 5000miles lol

Jeje, thought so.

Nathan: Keep us posted. I'll do the same. I would have updated my site some time ago but my home computer is severely infected with viruses so working on it is no fun... and all my site files are there.

Anyway, my ride should go into the muffler shop September 1st for the manifold, downpipe and cooler piping.

[TrunkMonkey]

5,000 miles to break in an engine? being a little too careful aren't we.

-demetrius

[Charlie240sxt]

well thats what my dad always told me and thats just what i have always done (I was a V8 guy for the last 2 years) I am only 18 so this 4 banger stuff is still a little new I update my site with friends rides and my old ride sometime soon

[huguetpj]

I think demetrius is right. 2k would be sufficiente, 5k is even better.

[TrunkMonkey]

there really isn't a set mileage as to when an engine is broken. most people say between 300-500 miles. if you're comfortable with 5,000 miles then that's cool.

the guys i learned from told me that if it doesn't burn oil or nothing breaks within the first 50 miles, it's to go. i've seen people build engines then dyno them as soon as they're done. iirc, there was a guy on FA who blew his KAT. he rebuilt it and drove it straight to the dyno. put down some very nice numbers, and as far as i know, has had no problems whatsoever.

-demetrius

[C-Kwik]

Hell, Mike Kojima broke in his motor with only 500 miles on the SCC project Z. Of course, the motor was built very meticulously.

And with manufacturing and machining process getting better and better, it's less of an issue than it used to be. How many times do people test drive new cars and drive the piss out of it. *raises hand*

[Charlie240sxt]

So what you guys think 3k 4k then slap the turbo on oh And also should i start low boost for the frist 100 or so miles then work up to high boost i am want around 25Psi on a track day and only 10-15 on a day drive NEED INPUT thanx

And yes i test drive car alot and run them to the redline about everytime lol sorry

[TrunkMonkey]

no need to wait to put the turbo on. rebuild and install everything at once, and run low boost.

-demetrius

[Charlie240sxt]

What do you call low boost for the brake in time

[TrunkMonkey]

i'd push no more than 5-6psi.

-demetrius

[klattr1]

i just accomplished a break in for a low compression motor running it without the turbo for only 500 miles.Im implementing JE 8.5:1's, Crower rods, Cometic MLS headgasket, Jim Wolf cams.I have ran it on stock injectors and stock mafs and it ran great.Good idle, maybe a tad rich cuz of the low compression but it didnt do anything drastic like flooding the rings.I would say do it, but if you have the choice to get your turbo parts sooner, put them on, 4000 miles is alot considering most people break in motors 500-1500 miles. Hell, think about all the people that buy Honda S2000's, supercharged Mustang cobras, and 350Z's brand new and get on them hard even after the first 300 miles.Its your decision but if you can put the turbo on after 500 miles, I would say go for it.P.S.I just put on my turbo(Fmax with t3/t04e stage 5 wheel and Jim Wolf ecu-cobra mafs and 72lb injectors) and everythings so far so good. Wish me luck!

[StanBo]

Hey klattr1 how is the KA-T now that it is broken in?

[klattr1]

its real nice5 psi is great even. Ill be turning up boost in a few weeks.I have my boost controller already, I just have to fix a few other things before i put it on.School is keeping me busy too.The top end is really nice with this turbo and the cams.

[StanBo]

We have three of four guys in our crew with KA-Ts and I want to start riding with them and start driving their cars to see if they will fit my needs. I know that Tony the guy that does really well at the drift events from the south kicks *** with his KA-T.