nemesis-dk

Got around to pulling the four studs, arp studs are 11mm std bolts are 10mm and the channel is 11,5mm so there has only been 0,25mm around the arp stud to feed oil to the lifters ..... in my book not much... i have hammered the engine and slaugthered a set of tires ,,,, you know what ..... no ticking at all ! So much work and money for gaskets, oil, filters, oilpump and head wasted because of stud opgrade ........ Btw i cant run a racecar on the streets here in DK. Even if it could be fun ive used 24L of oil in the last couple of month and gotten 3 track laps out of it .... oil might not be dirty ;-) if you cant do it right dont do it at all and dont quick fix .... it will end in tears ! so now im sending my head to the machine shop to have the channels bored up

ok why ?

Ok guys i took my Sherlock Holmes hat on today (again) because shifting to thinner oil might help but the oil is in my oppinion not the caurse of my problem. So i took my old head and went through its oil channels and im maybe 1 step closer to solve this mystery ... The lifters get oilfeed from 2 channels that runs through/past 4 of the head bolts....then i remembered .... had absolutly no problems before i shifted to ARP studs. Im well aware that thousands of ARP bolts/studs find the way to our engines with no issues at all but it is possible that ive got a set that are a fraction thiker than normal so they will act as restrictors. So when i can free some time from the costumers old US-cars i will try to replace 4 of the studs with oem bolts and see if that does the trick.

Well off course its worth a try using a thinner oil .... maybe a oil for diesel engines that has addtives to remove carbon deposits.... my only worry is if i will end up with a blown engine ..... its a drift car that gets hammered every time its used ...living its life on the limiter

I have always run it om Sunoco 10-60 with no issues And its not dilluted oil.... been changed way to many times this last 2 month ! Yes it does it under load free reving too I havent fitted a temp gauge....... i have a fairly large oil-cooler with fan on it to keep it "cool" its on same circuit as the water fans and controlled by MS Im also almost 100% sure that theres not sufficient oil pressure in the head and need to find the source of it and the thing that i just cant get is that its on both sides and all the way from cyl 1-6 so it cant just be 1 clogged oil canal ...or what? If it had thrashed the bearings i wouldnt get a good pressure. Im just hoping that theres someone whos a RB nerd and know all the corners in that engine or someone who have tried the same and overcome it. it could be some litte thing ive missed .... im not at all flawless

running oem springs and havent done anything to the bottom . 2 years ago bored and wossner pistons put in it

Last year i smashed a lifter and the valve under at a competition where i could hear a lifter was dead and ignored it to complete the comp. the top of the valve stem had taken a lot of beating so i replaced lifter, valve, spring. retainer and lock and reassembled the engine just to find this problem. There is now a different head on it from a running engine and it still has the same problem so im ruling lifters out .

Im ready to NUKE my RB long story short: Have an all in pro spec R32 RB25 drift-car and have now picked my engine apart 4 times now ,given it ARP bolts new-used head that been by the machine shop to be recon´d Changed oilpump alot of headgaskets BUT I have a lifter (oil) problem i cant seem to find ! The engine runs spot on !!..... until i rev it to 7000ish and here starts the ticking from the lifters and i have 80 psi oilpressure here fully warmed up ............. I dont get it ! Is there somewhere in the head i can meassure the oilpressure in the oil gallery ? Bonus info The ticking is on both sides If i disregard the ticking and keep on "trucking" it just spreads to almost all of them. then i stop the engine and scream at it go home and return the next day to start it up and the ticking stops ! I have an oil-cooler with fan on it im running Sunoco 10-60 racing oil I need to find the origin of my problem or i will go MAD You can see my car here : http://bilgalleri.dk....aspx?ID=205765