Jonny Posted February 19, 2007 Share Posted February 19, 2007 Looking for do's and don'ts basically, should I hold it at revs or let it idle, got it in my mind that I'm meant to hold it around 2000rpm. So just let me know what works and what not to do. Cheers Guys!!!! THNX XOXOXO CYA! Quote Link to comment Share on other sites More sharing options...
davidian Posted February 19, 2007 Share Posted February 19, 2007 yeah, just let it idle at around that for a while then take it for a good run, they usually need 500-1000 to run in nicely. no redline or trashing but Quote Link to comment Share on other sites More sharing options...
Jonny Posted February 19, 2007 Author Share Posted February 19, 2007 At around 2000rpm? Quote Link to comment Share on other sites More sharing options...
davidian Posted February 19, 2007 Share Posted February 19, 2007 yeah idel at 1500-2000 i suppose different people will tell you diff opinions. but yeah nice long cruise after that. 500 km or so later-oil change Quote Link to comment Share on other sites More sharing options...
cute wee gem Posted February 19, 2007 Share Posted February 19, 2007 to run in a new cam you should hold it at 2000-2500 for about 15 minutes, then drive it in "short bursts" accel hard (but don't bring it way up the rev range) in say 4th gear, then let it engine brake for a bit, then accel again and so on. Then drive it fairly normally but no thrashing and try not to let it idle for ages, then change the oil Someone will prob tell me thats a load of rubbish.. Its just what I've read on the net. So many people have different opinions on the matter Quote Link to comment Share on other sites More sharing options...
macabre Posted February 19, 2007 Share Posted February 19, 2007 Best idea is to ask you're engine reconditioner. personally i would not let it idle at all, drive it normally with running in oil. i.e dont thrash it but dont nana it. for 100km, then cahnge oil and drive as you usually would. Quote Link to comment Share on other sites More sharing options...
lowlancer Posted February 19, 2007 Share Posted February 19, 2007 Load it heavily. Don;t rev it out, put it in a higer gear at lower speeds Quote Link to comment Share on other sites More sharing options...
Snoozin Posted February 19, 2007 Share Posted February 19, 2007 Lots of wide open throttle, without either thrashing it or loading it up excessively. Quote Link to comment Share on other sites More sharing options...
davidian Posted February 19, 2007 Share Posted February 19, 2007 Best idea is to ask you're engine reconditioner. Quote Link to comment Share on other sites More sharing options...
Guest sexychevette Posted February 19, 2007 Share Posted February 19, 2007 Driving up hills in a high gear is good...i think Quote Link to comment Share on other sites More sharing options...
Toucan Posted February 20, 2007 Share Posted February 20, 2007 Yea keep it under load Quote Link to comment Share on other sites More sharing options...
Jonny Posted February 20, 2007 Author Share Posted February 20, 2007 I dont have an engine reconditioner, so kinda out of the question, don't theres too many around here, cars not road legal so cant take it out for a cruise, driveways a couple of hundred metres long so can run it up and down that, ottherwise i can't really do much else. Quote Link to comment Share on other sites More sharing options...
davidian Posted February 20, 2007 Share Posted February 20, 2007 sorry but thats what it takes mang, midnight run ftw Quote Link to comment Share on other sites More sharing options...
sholdowa Posted February 20, 2007 Share Posted February 20, 2007 to run in a new cam you should hold it at 2000-2500 for about 15 minutes, then drive it in "short bursts" accel hard (but don't bring it way up the rev range) in say 4th gear, then let it engine brake for a bit, then accel again and so on.Then drive it fairly normally but no thrashing and try not to let it idle for ages, then change the oil Someone will prob tell me thats a load of rubbish.. Its just what I've read on the net. So many people have different opinions on the matter That's basically what I do. Fill it with cheap mineral oil, 15 mins @ 2500 to run the cam in, then short bursts up and down the rev range for about 25km. Then change the oil and give it shit. The theory is that tolerances are so good these days, you've got to be pretty rough to seal everything up. Quote Link to comment Share on other sites More sharing options...
nismo.capri Posted February 20, 2007 Share Posted February 20, 2007 to run in a new cam you should hold it at 2000-2500 for about 15 minutes, then drive it in "short bursts" accel hard (but don't bring it way up the rev range) in say 4th gear, then let it engine brake for a bit, then accel again and so on.Then drive it fairly normally but no thrashing and try not to let it idle for ages, then change the oil Someone will prob tell me thats a load of rubbish.. Its just what I've read on the net. So many people have different opinions on the matter That's basically what I do. Fill it with cheap mineral oil, 15 mins @ 2500 to run the cam in, then short bursts up and down the rev range for about 25km. Then change the oil and give it shit. The theory is that tolerances are so good these days, you've got to be pretty rough to seal everything up. And me.... The cam is under most load at idle which is why with a new cam you idle it at 2000rpms or over. this keeps the over the nose pressure down on the lobes, if the engine starts to over heat say 10 mins in turn it off let it cool down then finish off running the cam in. Once that's done I take it out and do 20-25 kms pretty much crusing but with lots of burst at about 3/4 throttle up the rev range. Then I'll give it a good ragging. After that it's run in. I do ~ 500km then an oil/filter change. The big thing is not to load it to much with low rpms as the bore wash can remove the oil and cause severe wear rings/bore because of the load and lack of lubircation. Use the cheapest mineral oil you can find, I've seen an evo engine run in on castrol GTX and it glazed the bores some thing wicked and was drinking oil after about 2000 kms Quote Link to comment Share on other sites More sharing options...
Ogre Posted February 20, 2007 Share Posted February 20, 2007 i recon ya shoud drive it how its intended to be driven.Give it some stick if ya gonna be thrashing it, not hardcore of course, i dont know.Cam would agree with me im sure Quote Link to comment Share on other sites More sharing options...
fuel Posted February 20, 2007 Share Posted February 20, 2007 Me n pete just ran in a Mitsi 4G37 SOHC after we fitted it with new rings and bearings. According to instructions on the ACL rings, it said to not let it idle for too long, and to put it under load for the first 20kms at the least. It's important to vary the load on the engine, otherwise the bores may glaze up. I took it to about 4000~4500rpm in the first few gears and opened the throttle often. Basically run it in how you would like to drive it later on. Also, if you are fitting ACL Protec rings, it is absolutely important to NOT hone the bore before hand and don't let any oil get in contact with the rings during assembly. Quote Link to comment Share on other sites More sharing options...
84_S12 Posted February 20, 2007 Share Posted February 20, 2007 Kawasaki run their engines in with only assembly lube, then strip and rebuild after it seizes. True story. I've heard to basically use shit mineral oil (Some companies have run in grade?) and give it a really good fang Quote Link to comment Share on other sites More sharing options...
Gaz Posted February 20, 2007 Share Posted February 20, 2007 DONT RUN IT IN UNDER LOAD. Thats basically the worst thing you can do for both running a cam in and also an engine!!! There isnt really a right way to run an engine in. Some people like to go hard from the firstkey on, some like to nana it round and some like to accelerate hard but not rev it alot. I let mine warm up then took it for a drive. Didnt take it past 3500RPM for bout 200ks (this is a pinto) After that I stepd it up everynow and then to round 4-5max then after 900ks I let it have full revs of 6. Helped I ran the car from Rotorua to Welly straight of the prime and key on. i pulled the head off about 1 month after ran in to put my hot head on and there was not one bit of piston slap etc so id say this way is 100% sweet to do.. *** READ THIS*** Gives a bit of both views and has a mint as link in first post. http://forums.performancecar.co.nz/phpB ... ne+running PS. Dont forget to prinme it first... & Set ya idle high to aviod loading at idle. & I wouldnt recomend running a new cam in at same time as new engine. Quote Link to comment Share on other sites More sharing options...
Jonny Posted February 20, 2007 Author Share Posted February 20, 2007 Cheers dude, its a pinto btw sorry about not mentioning that, im running the same cam just with new bearings and cleaned up, what do you mean by prime, pour a bit of petrol in or what? Quote Link to comment Share on other sites More sharing options...
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