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Running In New Motor For Track Only Car..

FC3S 13BT

By FC3S 13BT,
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FC3S 13BT Enthusiast

FC3S 13BT

Posted
Posted

Not sure if this is the right place to post this thread.. (feel free to move it)

I've just had my motor rebuilt and I need to put some k's on it.

How would I go about doing this? as the car is not registered (being a track only car)

Would it be best to do it on the dyno? Jack the rear wheels up in the garage and drive stationary? (neighbours would love that! haha)

What have you guys done in the past?

Thanks in advance

Liam.

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BezerkR32 Veteran

BezerkR32

Posted
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90% of your running in is done in the first 15mins after start up. you should have held engine at 2500-3000rpm for 10-15mins. this runs the cams in as well as beds the rings. some load on the dyno will also do it the world of good for 15-20mins, then tune it. not a great believer of running in engines as the first 15 mins are critical. if the rings dont bed in then, they never will.

i will be firing my engine and running the cams in while i bleed the cooling system, checking it for leaks, then tuning it.

Dont jack the wheels up as that would not give the engine any load and it wouldnt run in at all...

Dyno is the only real option, or you can try geting a movement permit for it and drive arround for a while

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R31Nismoid Grand Master

R31Nismoid

Posted
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Agree with above^^ Run it in on the dyno, tune it up and off you go. Should take 15-20mins and then usual time for tuning etc

And off you go, both my RB25 and RB26 were done that way. I even was off to the drags the next day with the 25 :P

Rest of the work is done @ the track.

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FC3S 13BT Enthusiast

FC3S 13BT

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Just remembered that my unregistered vehicle permit dosnt expire until next wednesday lol

So I guess I'll do a few hundred k's tomorrow.

Also when it was first started for the first time it was driven around the block a few times etc

Thanks for your responses anyway

Liam. :P

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zebra Grand Master

zebra

Posted
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90% of your running in is done in the first 15mins after start up. you should have held engine at 2500-3000rpm for 10-15mins. this runs the cams in as well as beds the rings. some load on the dyno will also do it the world of good for 15-20mins, then tune it. not a great believer of running in engines as the first 15 mins are critical. if the rings dont bed in then, they never will.

i will be firing my engine and running the cams in while i bleed the cooling system, checking it for leaks, then tuning it.

This Must Be One of those new DOHC rotarys I keep hearing about...:P

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GTRsean Grand Master

GTRsean

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:P:P:P

What he said!!!

I'll have to bed in and run in my car too when I'm finished. Someone mentioned disconnecting the wastegate actuator arms to aid in bedding in rings (piston rings for me, apex seals for you).

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FC3S 13BT Enthusiast

FC3S 13BT

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90% of your running in is done in the first 15mins after start up. you should have held engine at 2500-3000rpm for 10-15mins. this runs the cams in as well as beds the rings. some load on the dyno will also do it the world of good for 15-20mins, then tune it. not a great believer of running in engines as the first 15 mins are critical. if the rings dont bed in then, they never will.

i will be firing my engine and running the cams in while i bleed the cooling system, checking it for leaks, then tuning it.

lol I dont think i need to run in the cams as I dont really have any..

but I do understand what your trying to say.

Cheers mate

Liam.

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FC3S 13BT Enthusiast

FC3S 13BT

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Just run it in on the dyno mate, that's what I'll be doing.

What does your engine builder recommend?

I spoke with the engine builder and he said that the dyno should be ok to finish the job as I have already done just over 200kms on the street.

so all is good, just have to find the time and cash to get it on there now haha

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Duncan Grand Master

Duncan

Posted
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but back to your first question....I'm a firm beleiver in dyno for 3 reason

1/ you don't really get all that much track time on a day, even with an open track day at wakie

2/ dyno can load the car up properly and you can run set it to the rev and load levels you want

3/ its much easier to pick and stop if something goes wrong. like your radiator being a little shorter than the standard one, coming loose, hitting the fan and cooking your brand new motor. for example.

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Beer Baron Grand Master

Beer Baron

Posted
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and number 4 reason:

4/ since on the dyno you are not actually driving, you can focus all your attention on the gauges, AFR, revs, dyno load and tuning and not worry about hitting people, cars, trees etc.

5/ on the dyno you can legally and easily drive to any speed you want, so it's a simple matter to load it up in 4th and 5th gears which is impossible on the road without breaking any laws and difficult on the track as duncan mentioned.

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Beer Baron Grand Master

Beer Baron

Posted
Posted

I am currently running in my 13BT as well. :P in an FD though (2001 RZ model). you can see some pics of the build here if you're interested. I had it built at Pre-stage in japan, small but excellent japanese rotary tuner.

http://photos.yahoo.co.jp/ph/cyoko810/lst?...rc=ph%26.view=t

http://www.prestage.rgr.jp/workscar.html

PS, I do believe anyone within a 3 block radius of my place is now slightly hearing impaired... :P

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FC3S 13BT Enthusiast

FC3S 13BT

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I am currently running in my 13BT as well. :) in an FD though (2001 RZ model). you can see some pics of the build here if you're interested. I had it built at Pre-stage in japan, small but excellent japanese rotary tuner.

http://photos.yahoo.co.jp/ph/cyoko810/lst?...rc=ph%26.view=t

http://www.prestage.rgr.jp/workscar.html

PS, I do believe anyone within a 3 block radius of my place is now slightly hearing impaired... :P

Haha they are loud bastards arnt they!

Pics look sweet as mate, are they brand new housings your using :P

How nice is that fc! I have heard of Pre-stage I actually used to have a pre-stage sticker on my fan shroud exactly where they have it in this link haha (purple to) http://www.prestage.rgr.jp/making/w990701.html

Do you have anymore pics of you fd?

cheers mate

Liam.

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Beer Baron Grand Master

Beer Baron

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Posted

cheers guys, yeah I love it. :) The RZ version is a little special too, just 175 RZs' made it's the rarest FD RX-7 you can get. It comes with carbon kevlar recaros, BBS wheels, Bilstein shocks, updated interior, no rear seats, alloy foot panels, alloy bonnet etc. It's the lightest FD variant too.

Yep, brand new housings, they advised it was the best way to go and I didn't want to do it by halves. :P They did an awesome job with the build and kindly took lots of pics. I love the rotors but they just don't last. This car is a 2001 model with very few kms and no mods apart from the exhaust when I bought it, but it was already due for a freshen up!

I don't have any nice pics really, but here are some I took on the day it arrived in aus. very dirty!

26574284en5.jpg

59627877ca8.jpg

58905825na9.jpg

95237631my0.jpg

55412814jm6.jpg

41994848ib6.jpg

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