Bianca's Camshaft

steptoe · Post by **steptoe** » Tue Jul 29, 2014 8:46 am

yr12 maths

, you might be perfect buyer for my 1200 page book intro to calculus

bet your calculator don't calculate dates entered and number of days between !

Brumby Kid · Post by **Brumby Kid** » Tue Jul 29, 2014 12:13 pm

Hahaha I managed to escape calculus, no idea what it even is
Probably not, though it will calculate everything to do with your homeloan, stats, and draw graphs... if you know how lol

Brumby Kid · Post by **Brumby Kid** » Wed Jul 30, 2014 8:49 pm

Alright so here is my dodgy video haha
It sounds a lot worse in the video than it actually is...
If you guys think 15 thou is too big, then what would you recommend? I don't want to wreck them.
Yes I know my oil can and breathers are dodgy but I don't know what else to do to avoid blow back/by (the normal one) and oil everywhere in the engine bay without the stock filter
https://www.youtube.com/watch?v=cWew4a1 ... e=youtu.be

Silverbullet · Post by **Silverbullet** » Wed Jul 30, 2014 10:03 pm

Hmm well I can't hear much over that deep rumble so I guess that's a good sign

If you set them to .015" hot I would have thought you wouldn't be able to hear yourself think...maybe your custom engine is bending the rules

Nubaru · Post by **Nubaru** » Wed Jul 30, 2014 11:26 pm

I used the term chaff cutter in the search window top right of screen before I set my tappets

Willy Fisterbottom · Post by **Willy Fisterbottom** » Thu Jul 31, 2014 8:08 am

Nice air cleaner

I noticed the black rocker covers.............does this have hydraulic lifters?

Brumby Kid · Post by **Brumby Kid** » Thu Jul 31, 2014 8:41 am

Silverbullet wrote:Hmm well I can't hear much over that deep rumble so I guess that's a good sign If you set them to .015" hot I would have thought you wouldn't be able to hear yourself think...maybe your custom engine is bending the rules

Hahaha yeah it has a nice intake roar, exhaust rumble and then just generally a bit noisy thanks to alloy heads i'm told.
Going to borrow a Rode' mic from school and get some good engine and exhaust videos for you guys

With what was shaved off the heads it was a total PITA to squeeze the intake back on as it was suddenly slightly too long so this should also affect the pushrod length/ rockers and clearances. The pushrods are the original ones.

Nubaru wrote:I used the term chaff cutter in the search window top right of screen before I set my tappets

Hahaha you mean the classic Subaru sound?

Willy Fisterbottom wrote:Nice air cleaner
I noticed the black rocker covers.............does this have hydraulic lifters?

Why thankyou

They were originally black and decided to repaint them black, now they are painted with mud

I don't actually remember whether they are solid or hydraulic

Will ask mud_king91 when he gets home tomorrow if he remembers from putting the pushrods in, I doubt the engine builder would remember.
Whats an easy way to tell?

Cheers Cam

Willy Fisterbottom · Post by **Willy Fisterbottom** » Thu Jul 31, 2014 9:00 am

What year model is your Brumby? Late models with black rocker covers and elecctronic dizzies had hydraulic lifters, you shouldn't adjust the rockers.......... If you put new solid lifters in it will be OK but cams are normaly made for solid or hydraulic lifters and you have to use the right lifters for the right cam.

I like the old school Ram Flo filter, I'm using one on my twins

Brumby Kid · Post by **Brumby Kid** » Thu Jul 31, 2014 9:39 am

1991 with electronic dizzy
The engine builder got new lifters from memory they might be solid, but dunno

then sent the cam off to his favorite grinder, CamTech Cams.

steptoe · Post by **steptoe** » Thu Jul 31, 2014 11:43 am

Willy Fisterbottom wrote:What year model is your Brumby? Late models with black rocker covers and elecctronic dizzies had hydraulic lifters, you shouldn't adjust the rockers.......... If you put new solid lifters in it will be OK but cams are normaly made for solid or hydraulic lifters and you have to use the right lifters for the right cam.

When this goes through google translate from Japanese or American English it should not work into Australian English. My parts man has been with Subaru since he was a boy in shorts, and my first Brumby rolled onto our shores - has enough experience to suggest no EA81 came into Australian compliance with hydraulic lifters due to no parts listing.

One of us is a rumour monger

, one of us is mistaken, pretty certain parts man is good

My API imported from Japan as just a used EA81 had hydraulic lifters and used mild steel push rods were one piece with ends shaped by force of some sort. Solids I have pulled apart all had aluminium with mild steel end caps.

Willy Fisterbottom · Post by **Willy Fisterbottom** » Thu Jul 31, 2014 12:27 pm

My parts man from Penrith Subaru (going back to the 70's) told me otherwise. My N/A EA81 hydraulic lifter engine has the 3 piece pushrods and no lock tabs on the adjusters. My EA81T has the one piece pushrod and lock tabs on the rockers.

Brumby Kid · Post by **Brumby Kid** » Thu Jul 31, 2014 4:16 pm

My pushrods have end caps that fall off and I can adjust the rockers

Steptoe what do you think about my valve clearance? What do you reccomend?

steptoe · Post by **steptoe** » Fri Aug 01, 2014 8:27 am

do what I did ....thought about it......the valves are only going to ride if there is no clearance and less than no clearance (tight) - correct ? Allowing for possibility that it may get hotter than normal op temp (gaps may get smaller or does metal expand when hot ? or expand enough to close the gaps ?) so, prepared for quick rocker adjusting I got engine to op temp, whipped the cover off and set them on one head to 4 thou each, cover back on, back to op temp, whipped other side off, did same . 14 years good enough trials ?

Last pair of heads just fitted up to B3 took numbers off tag off my 20/60 cam - 6 & 8 thou cold. Yet to drive it, still, noise amps in tin rockers

Brumby Kid · Post by **Brumby Kid** » Fri Aug 01, 2014 8:51 am

Ahh too easy, so no damage if too tight. Just going to have to work out what an appropriate size is now.

steptoe · Post by **steptoe** » Fri Aug 01, 2014 11:02 am

Better sit at the front of the class Cam. Did I say no damage if too tight ? If they are tight they will likely cause a miss, lower comp and maybe burn a valve. If their is a gap, surely some gap is not tight. Tight is no gap and riding on valve.