ST170 issues

Focus ST 170 Discussion

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luke skywalker
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Posts: 194
Joined: Thu Oct 03, 2013 8:22 am
Make: ford
Model: Focus
Type: ST170
Year: 2003

Re: ST170 issues

Post by luke skywalker » Wed Nov 05, 2014 7:11 am

fuzz123 wrote:Underdrive pulley, software...pcv delete.
PCV delete?
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luke skywalker
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Posts: 194
Joined: Thu Oct 03, 2013 8:22 am
Make: ford
Model: Focus
Type: ST170
Year: 2003

Re: ST170 issues

Post by luke skywalker » Wed Nov 05, 2014 7:13 am

cossieboy wrote:There's not much you can do really . Bigger TB , Decat , 63 mm zhorst , wrapped headers , adjustable cam pulley retarded at 6 degrees , coil overs , CAI .
How's the ride with the coilovers? Does yours have a separate nut to adjust ride height without adjusting spring rate or does it move the whole setup?
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Mclovin
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Re: ST170 issues

Post by Mclovin » Wed Nov 05, 2014 8:38 am

Luke, get the car up to running temp and then let it idle for about 2 minutes and give it a quick rev. if you get clouds of smoke then its your valve stem seals. In our experience, most cars that have that problem need valves and guides replaced as well.
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E.T.
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Joined: Mon Feb 28, 2011 8:54 am
Make: Ford
Model: Focus
Type: ST170
Year: 2004
Location: Florida, Roodepoort

Re: ST170 issues

Post by E.T. » Wed Nov 05, 2014 9:21 am

Luke welcome to the ST170 side of life.

Sounds like is can be your rings or the valve stem seals.

As far as modding goes Cossie and Fuzz has covered it but be prepared to fork out the cash for those mods as they are hard to come by. Best first mod is decat and 63mm exhaust makes quite the difference low down.

Hope you get her back to former glory buddy and Now its time to join the rest of us st170 joburg owners 8)
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What doesnt kill you only makes you stronger!

Current: 2004 Imperial Blue ST170 - 124.3whp and 156nm @ KAR 2011
ex: '98 Corsa x20xe

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E.T.
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Re: ST170 issues

Post by E.T. » Wed Nov 05, 2014 9:25 am

cossieboy wrote:Looks like I have the lowest mileage here :) 162 k and still pulls like the day I got her well a little better now with the mods
Long time no see Cossie. Im on 167k kms and still running strong
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What doesnt kill you only makes you stronger!

Current: 2004 Imperial Blue ST170 - 124.3whp and 156nm @ KAR 2011
ex: '98 Corsa x20xe

cossieboy
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Make: Rocam 1.6
Model: st 150
Type: st 170
Year: 2004

Re: ST170 issues

Post by cossieboy » Wed Nov 05, 2014 9:54 am

Hey just been busy bud . Been popping around tho . My opinion the cam retarding id by far the best mod I have done and saw and felt reasonable gains
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cossieboy
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Re: ST170 issues

Post by cossieboy » Wed Nov 05, 2014 9:57 am

fuzz123 wrote:Underdrive pulley, software...pcv delete.
Why a PCV delete ????? . Under drive pulleys are definitely not worth the bucks imho
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luke skywalker
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Posts: 194
Joined: Thu Oct 03, 2013 8:22 am
Make: ford
Model: Focus
Type: ST170
Year: 2003

Re: ST170 issues

Post by luke skywalker » Wed Nov 05, 2014 12:03 pm

Mclovin wrote:Luke, get the car up to running temp and then let it idle for about 2 minutes and give it a quick rev. if you get clouds of smoke then its your valve stem seals. In our experience, most cars that have that problem need valves and guides replaced as well.
She only smokes when she's cold and only for a few seconds then the smoking stops
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fuzz123
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Re: ST170 issues

Post by fuzz123 » Wed Nov 05, 2014 3:04 pm

The PCV valve lets blow by gasses escape into the intake system by your throttle body. So first of all it lets smoking hot air back into the intake, which kinda diminishes the use of a cai. Secondly the design of the valve for the 170 in basic terms is a nut and a spring, the set back here is that if you rev high the valve basically closes on you and all the pressure has to be relieved through the cam cover, this in turn puts pressure on your internals which shouldnt be there and can be harmful. So by taking the valve out and blocking the hole on the intake you dont get the hot air in and lessen the pressure on the engine.
'09 320D Msport BMW

Ex. Ford Focus ST170 - a Slow one....

cossieboy
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Re: ST170 issues

Post by cossieboy » Wed Nov 05, 2014 6:12 pm

fuzz123 wrote:The PCV valve lets blow by gasses escape into the intake system by your throttle body. So first of all it lets smoking hot air back into the intake, which kinda diminishes the use of a cai. Secondly the design of the valve for the 170 in basic terms is a nut and a spring, the set back here is that if you rev high the valve basically closes on you and all the pressure has to be relieved through the cam cover, this in turn puts pressure on your internals which shouldnt be there and can be harmful. So by taking the valve out and blocking the hole on the intake you dont get the hot air in and lessen the pressure on the engine.
Makes sense and how will I go about doing that delete bud
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fuzz123
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Re: ST170 issues

Post by fuzz123 » Wed Nov 05, 2014 8:37 pm

cossieboy wrote:
fuzz123 wrote:The PCV valve lets blow by gasses escape into the intake system by your throttle body. So first of all it lets smoking hot air back into the intake, which kinda diminishes the use of a cai. Secondly the design of the valve for the 170 in basic terms is a nut and a spring, the set back here is that if you rev high the valve basically closes on you and all the pressure has to be relieved through the cam cover, this in turn puts pressure on your internals which shouldnt be there and can be harmful. So by taking the valve out and blocking the hole on the intake you dont get the hot air in and lessen the pressure on the engine.
Makes sense and how will I go about doing that delete bud

I did it the hard way by buying a pcv delete kit from CFM and after fitting it I realized what I should have acutally done:
Pull out the PCV valve and grind open the bottom part so that you can take out the spring and nut in it, so it will basically let any air through. Then unhook the pipe from your throttle body and just let it hang there, then you blank off the hole on your throttle body (i used a piece of pipe and a old spark plug in it). Then you done.

Any excess air will be released through the pip into the atmosphere to the back part of your gearbox and should some oil go up the pipe it is long enough too keep it in and just run back into the engine.

You can enquire google for some pics if you are unsure where everything is.



What i did not mention is that doing this also saves on cam cover gaskets, as the extra pressure normally blows that gasket first.
'09 320D Msport BMW

Ex. Ford Focus ST170 - a Slow one....

cossieboy
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Re: ST170 issues

Post by cossieboy » Thu Nov 06, 2014 7:54 am

Thanks Buddy
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E.T.
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Re: ST170 issues

Post by E.T. » Thu Nov 06, 2014 9:50 am

cossieboy wrote:Hey just been busy bud . Been popping around tho . My opinion the cam retarding id by far the best mod I have done and saw and felt reasonable gains
Cossie did you change your cam pulley to an adjustable one with the retarding?
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What doesnt kill you only makes you stronger!

Current: 2004 Imperial Blue ST170 - 124.3whp and 156nm @ KAR 2011
ex: '98 Corsa x20xe

cossieboy
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Posts: 1073
Joined: Mon Jul 11, 2011 9:50 pm
Make: Rocam 1.6
Model: st 150
Type: st 170
Year: 2004

Re: ST170 issues

Post by cossieboy » Thu Nov 06, 2014 10:54 pm

E.T. wrote:
cossieboy wrote:Hey just been busy bud . Been popping around tho . My opinion the cam retarding id by far the best mod I have done and saw and felt reasonable gains
Cossie did you change your cam pulley to an adjustable one with the retarding?
Yes I did with an aem pulley saw at least 10 hp across the rev range . It was set up on a dyno where we calculated the difference in hp at intervals of 500 rpm . It made good pwer between 2000 Rpm to 6000rpm from 6 to 7 k the power was the same as stock .The best adjustment was - 6 degrees
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E.T.
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Posts: 274
Joined: Mon Feb 28, 2011 8:54 am
Make: Ford
Model: Focus
Type: ST170
Year: 2004
Location: Florida, Roodepoort

Re: ST170 issues

Post by E.T. » Fri Nov 07, 2014 9:21 am

cossieboy wrote:
E.T. wrote:
cossieboy wrote:Hey just been busy bud . Been popping around tho . My opinion the cam retarding id by far the best mod I have done and saw and felt reasonable gains
Cossie did you change your cam pulley to an adjustable one with the retarding?
Yes I did with an aem pulley saw at least 10 hp across the rev range . It was set up on a dyno where we calculated the difference in hp at intervals of 500 rpm . It made good pwer between 2000 Rpm to 6000rpm from 6 to 7 k the power was the same as stock .The best adjustment was - 6 degrees
Buddy do you have the Dyno sheet of that. Would like to see the graph and what the torque does.
Image
What doesnt kill you only makes you stronger!

Current: 2004 Imperial Blue ST170 - 124.3whp and 156nm @ KAR 2011
ex: '98 Corsa x20xe

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