One small problem I came across was when measuring the shim in bucket make sure your the lenght of metal that you put in bucket for measuring is same diameter as valve stem, the valve stem can wear a hollow in shim like a dish, so if the lenght of metal is wider it sits on edge of dish giving a smaller reading, it should sit in bottom of dish where valve stem sits and wears, maybe with lack of oil or hardness of shim breaking down made a couple of thou larger on mine. Hope that makes sense.
Thats a great point, thanks for the advice! 👍I think realistically Ill need to try to swap the buckets around and make sure the 3 I couldn't read are replaced with ones that I can read. Then I can re-measure the clearances with my feeler gauges and then see where Im at. 👍
Hi Marcus I do admire your patience and purseverance. I did message in the very start when you got the head back from AL and put it back on, what about the clearances. Any head work with solid lifters, clearances will change, Shame they are all excessive in which find unusual because Andrew would have reseated and lapped the seats, then they would have been tight not excessive unless you had all new valve seats fitted, hope you understand where I am coming from. New seats big clearances, old seats lapped in valves tight clearances(valve sits lower in seat)
Yes the valves were re-lapped in but I didnt send the cams to A L Developments. Also the cams were actually out of a completely different head. Andrew did tell me I should check the clearances. At the time it was a mad rush to get the engine back together in time for my pre-booked dyno session. 👍
Use to do ford st and rs engines with same set up. Personally I use to use micrometers to measure the buckets - with that and feeler gage measurements. Only as they do wear down makes your measurements more accurate for clearance. I know it’s a little late to mention but for anyone reading or your next rebuild
Keep bolts in the caps when you lift them (keeps them in same holes as removed also make sure you put them caps facing the same orientation as removed or you may bind up cams.
Would advise buying some metric feeler gauges for the future, as it is very easy to introduce error in the calculations with all the converting to and from metric and imperial.
7:01 with the engine off, the VVT returns to fully retard position which means the intake valves stay open slightly later in the 4 stroke cycle. when you do compression test at starter motor rpm, some of the air gets pushed back out of the cylinder through the inlet valves.
Novice here (I've only built one engine). Why do you need to measure the buckets on hydraulic lifters? Is it for when you have not got standard cams? I thought they fill up with oil and fill the gaps so no shims required
I was always taught to do valve clearance when cold, the idea being that gives you the clearance for when its hot 🔥🔥, Ald are suggesting you run slightly tighter valve clearance than ford recommend, will be interesting to see if theres any difference in how it runs after . Keep up the good work 💪
For a couple of thousands over top tolerance on the clearance I wouldn't bother given that, generally, valve seat recession will mean that soon they will be in tolerance.
Unless it's "tappety" you are better off leaving it. You will maybe lose a max of 2hp if they are loose. Too tight and burn a valve a lot more will escape.
They on the flu bench is that right and married it to your trumpet length is that right or do you need longer trumpet when you start learning no flow bench no longer port power joke
Thanks for the advice mate! 👍 I'll make sure that I replace those 3 buckets with ones that have the numbers clearly printed on them and then I can re-measure and get a more accurate calculation for them.
Just bend the feeler gauges you have. You'll be fine to put a slight crease/angle in them. They're just thin steel Shout out rocker arms. So much easier than this shim/bucket malarkey 🤣🤣
There isnt much oil showing around the rockers or cover unless you have cleaned it off,be carefull you dont do the valve clearances to tight cause you could burn out a valve and be in a world of pain lol
One small problem I came across was when measuring the shim in bucket make sure your the lenght of metal that you put in bucket for measuring is same diameter as valve stem, the valve stem can wear a hollow in shim like a dish, so if the lenght of metal is wider it sits on edge of dish giving a smaller reading, it should sit in bottom of dish where valve stem sits and wears, maybe with lack of oil or hardness of shim breaking down made a couple of thou larger on mine. Hope that makes sense.
Thats a great point, thanks for the advice! 👍I think realistically Ill need to try to swap the buckets around and make sure the 3 I couldn't read are replaced with ones that I can read. Then I can re-measure the clearances with my feeler gauges and then see where Im at. 👍
Hi Marcus I do admire your patience and purseverance.
I did message in the very start when you got the head back from AL and put it back on, what about the clearances. Any head work with solid lifters, clearances will change, Shame they are all excessive in which find unusual because Andrew would have reseated and lapped the seats, then they would have been tight not excessive unless you had all new valve seats fitted, hope you understand where I am coming from.
New seats big clearances, old seats lapped in valves tight clearances(valve sits lower in seat)
Yes the valves were re-lapped in but I didnt send the cams to A L Developments. Also the cams were actually out of a completely different head. Andrew did tell me I should check the clearances. At the time it was a mad rush to get the engine back together in time for my pre-booked dyno session. 👍
Put a list up of buckets you need Marcu and I bet some of your views may have the ones you need
Thank you for sharing about the buckets and meth of measuring them. Look forward to seeing the rebuild and performance feel.
Thanks for watching mate! 👍
Use to do ford st and rs engines with same set up. Personally I use to use micrometers to measure the buckets - with that and feeler gage measurements. Only as they do wear down makes your measurements more accurate for clearance. I know it’s a little late to mention but for anyone reading or your next rebuild
Good catch Marcus , you got to be accurate when dealing with engine measurements.
Accuracy is not one of my strengths!! 😃
Keep bolts in the caps when you lift them (keeps them in same holes as removed also make sure you put them caps facing the same orientation as removed or you may bind up cams.
Always undo cams from the middle outwards in a circular motion bit by bit. DONT gun them off or on. Otherwise you risk snapping the cams.
Thanks for the advice mate! 👍
Is it not from the outside in? The reverse of installation 🤔
Would advise buying some metric feeler gauges for the future, as it is very easy to introduce error in the calculations with all the converting to and from metric and imperial.
Interesting thanks M H 👍😊
Your man on the rolling road will do that standard professional.there you big in the game ...
I’m after a spare complete head for ST170 if you know of one Marcus ?
7:01 with the engine off, the VVT returns to fully retard position which means the intake valves stay open slightly later in the 4 stroke cycle. when you do compression test at starter motor rpm, some of the air gets pushed back out of the cylinder through the inlet valves.
Thanks for the explanation mate! 👍
Why have you never put a roll cage into the car?
Its a road car mate. 👍
Novice here (I've only built one engine). Why do you need to measure the buckets on hydraulic lifters? Is it for when you have not got standard cams? I thought they fill up with oil and fill the gaps so no shims required
You don’t need to measure the buckets on hydraulic lifters mate. ST170s don’t have hydraulic ones. 👍
@@marcushayesford nice, that's a relief and saves me pulling mine apart to check 😅
I was always taught to do valve clearance when cold, the idea being that gives you the clearance for when its hot 🔥🔥, Ald are suggesting you run slightly tighter valve clearance than ford recommend, will be interesting to see if theres any difference in how it runs after . Keep up the good work 💪
That seems a hell of a lot of work for getting the lifter clearances right. I'll never moan about setting my pinto cam lifter clearances again! 😂
I LOVE Pintos mate!! 👍 I just don't have a big enough wallet to get decent power from one. 👍
You need some pinto feeler gauges that are angled to access the cam lobe
get this right an it will make a big different's
Do you think you'll ever bring back the old music in your videos?
The RUclips music is good, but i do miss the old signature tracks!👌😃
Maybe I'll randomly chuck some of my tracks into some future videos mate. 👍
Hi that a helliecoil not a strip thread on that bolt
Thanks for the advice mate! 👍 So Im guessing that some of the helicoil is still in the hole and that is why all the bolts torqued up ok??? 🤔
It’s the nut behind the steering wheel that caused all that to happen 👍🏻
Defo mate! 😃
Marcus Hayes sponsored by Heli Coil 😂😂😂 stop breaking thing bud .
😃
For a couple of thousands over top tolerance on the clearance I wouldn't bother given that, generally, valve seat recession will mean that soon they will be in tolerance.
Unless it's "tappety" you are better off leaving it. You will maybe lose a max of 2hp if they are loose. Too tight and burn a valve a lot more will escape.
The clearances are between 60% and 80% wider than my cylinder head builder has recommended tho. 👍
They on the flu bench is that right and married it to your trumpet length is that right or do you need longer trumpet when you start learning no flow bench no longer port power joke
What is a flu bench??? 🤔
Flow bench Topman doesn't know what the is
Invest in a micrometer to measure the buckets.
Thanks for the advice mate! 👍 I'll make sure that I replace those 3 buckets with ones that have the numbers clearly printed on them and then I can re-measure and get a more accurate calculation for them.
Definitely use a micrometer, then you can check the ones you can already read aswell
Just bend the feeler gauges you have. You'll be fine to put a slight crease/angle in them. They're just thin steel
Shout out rocker arms. So much easier than this shim/bucket malarkey 🤣🤣
There isnt much oil showing around the rockers or cover unless you have cleaned it off,be carefull you dont do the valve clearances to tight cause you could burn out a valve and be in a world of pain lol
Gaps certainly explain your low compression.
Yup more likely cam overlap.
Which gaps?
double check and wait until somebody who really knows posts in.................lol. ..................... don't do anything yet
Luckily for me a lot of my viewers do know what the are doing. . . . . unlike me!! 😃
2nd
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