what benefit is had from fitting a big valve head?
#4
st170 breaking
![Default](https://passionford.com/forum/images/icons/icon1.gif)
you wont put big valves in without it being ported out at the same time
wheni fitted a stg 3 head to my last rs it was excellent, loads more power but louder exhaust too
i used to break rs's up and kept the best bits and the best head i kept was brand new big valves nice big round ports and some fancy cam, really worth it.
wheni fitted a stg 3 head to my last rs it was excellent, loads more power but louder exhaust too
i used to break rs's up and kept the best bits and the best head i kept was brand new big valves nice big round ports and some fancy cam, really worth it.
#5
Too many posts.. I need a life!!
![Default](https://passionford.com/forum/images/icons/icon1.gif)
I totally disagree.
With a 195 HP engine oversize valves are certainly not needed. A proper valve grind with the standard valve sizes (which are very large) is more than enough. Better ways to spend your money. Also most of the large oversize valves are crap. They do not have hard chromed stems and the material is soft. Some simple porting of the inlet ports just before the port turns into the bowl area can be a great benefit. Also remove the valve guide part that protrudes into the port (worth much more than you think) On the exhaust side just radius the sharp edge ever so slightly - makes a big difference too.
Only the cross hatched heads have enough material to enlarge the port size enough to take advantage of the larger valves anyhow. Ports only need enlarging like this if you are looking for well over 250 hp (higher rpm power)
With a 195 HP engine oversize valves are certainly not needed. A proper valve grind with the standard valve sizes (which are very large) is more than enough. Better ways to spend your money. Also most of the large oversize valves are crap. They do not have hard chromed stems and the material is soft. Some simple porting of the inlet ports just before the port turns into the bowl area can be a great benefit. Also remove the valve guide part that protrudes into the port (worth much more than you think) On the exhaust side just radius the sharp edge ever so slightly - makes a big difference too.
Only the cross hatched heads have enough material to enlarge the port size enough to take advantage of the larger valves anyhow. Ports only need enlarging like this if you are looking for well over 250 hp (higher rpm power)
Last edited by Canada1; 11-11-2011 at 12:39 AM.
Trending Topics
#8
Ask me a question!
iTrader: (1)
![Default](https://passionford.com/forum/images/icons/icon1.gif)
bomsch
You obviously havent been on here long. Offering parts and services tends to make traders and other bedroom wannabetrader/sellers pissed off.
Perry is right after learning the hard way like most of us, a 195 setup will have no great advantage to fitting a big valve head. In fact make it less responsive. The fact of the matter is you have a 2 bar map sensor so having an engine designed for more power and only running 1 bar of boost is pointless.
You would be better off saving the money and putting to towards a management system that can control your engine better and produce the power it can flow in std form. Around 230ish bhp wih std T3 and head etc..
You obviously havent been on here long. Offering parts and services tends to make traders and other bedroom wannabetrader/sellers pissed off.
Perry is right after learning the hard way like most of us, a 195 setup will have no great advantage to fitting a big valve head. In fact make it less responsive. The fact of the matter is you have a 2 bar map sensor so having an engine designed for more power and only running 1 bar of boost is pointless.
You would be better off saving the money and putting to towards a management system that can control your engine better and produce the power it can flow in std form. Around 230ish bhp wih std T3 and head etc..
#12
Ask me a question!
iTrader: (1)
![Default](https://passionford.com/forum/images/icons/icon1.gif)
How is a second hand L6 ecu worth £100 overpriced, for what it can do far better than any batch firing management system.
Same goes for all the sensors and wiring loom. There is nothing overpriced about it.
A cosworth type loom is £100 worth made by a company for production cars! If you really want to save money then use a fiat or lancia or duccati loom from a breakers for £50 this will be far better than someone in their bedroom making one with bits of wires and plugs from an old scrap loom
how much is a megasquirt loom going to cost to have made or how much time will it take for someone to make it to a good quality. Think of the price of each connector then tell me its value for money or value for time!
If you want to talk about management systems better than having weber, then you would need to use the likes of pectel, autronic, life racing to name some of the worthy ones. All these use the same sensors as a weber ecu and all work in a very similar way.
You also go on to say about getting help from others. This is great but how many tuners will give you support and even want to map your engine. Unlike a weber ECU which can be tuned in pretty much most citys in the country.
There is loads of downsides to fitting megasquirt or any other system but thats not what this post is about.
Same goes for all the sensors and wiring loom. There is nothing overpriced about it.
A cosworth type loom is £100 worth made by a company for production cars! If you really want to save money then use a fiat or lancia or duccati loom from a breakers for £50 this will be far better than someone in their bedroom making one with bits of wires and plugs from an old scrap loom
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
If you want to talk about management systems better than having weber, then you would need to use the likes of pectel, autronic, life racing to name some of the worthy ones. All these use the same sensors as a weber ecu and all work in a very similar way.
You also go on to say about getting help from others. This is great but how many tuners will give you support and even want to map your engine. Unlike a weber ECU which can be tuned in pretty much most citys in the country.
There is loads of downsides to fitting megasquirt or any other system but thats not what this post is about.
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
#14
![Default](https://passionford.com/forum/images/icons/icon1.gif)
i got mine from efiextra which made and tested for £360, then used a ford efi loom.
there are companys out there who map them, mtech + more but can't remember at the minute
never said it was better then the (overpriced
) cosworth gear, but for what he's after it will do the job very well and at a good price.
+ you have the added bonus (apart from injector loom) that all the parts all new and if you want you can plug your laptop into ms2.
there are companys out there who map them, mtech + more but can't remember at the minute
never said it was better then the (overpriced
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
+ you have the added bonus (apart from injector loom) that all the parts all new and if you want you can plug your laptop into ms2.
#15
![Default](https://passionford.com/forum/images/icons/icon1.gif)
it is, i was going to fit to my S2 but the only thing that i didn't like was the fact that every time you have problem with it you need to take it to a tuner who knows it.
#16
Ask me a question!
iTrader: (1)
![Default](https://passionford.com/forum/images/icons/icon1.gif)
never said it was better then the (overpriced
) cosworth gear, but for what he's after it will do the job very well and at a good price.
+ you have the added bonus (apart from injector loom) that all the parts all new and if you want you can plug your laptop into ms2.
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
+ you have the added bonus (apart from injector loom) that all the parts all new and if you want you can plug your laptop into ms2.
£360 is for what exactly?
Not the ECU surely! How is that value for money and not overpriced then?
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
Then you say you can buy all the sensors new, well obviously you can buy any weber sensor new too so there would be no difference in money, if anything you can find secondhand weber sensors for great value for money all over the UK and Europe.
Lastly as you said "a" tuner may map the ecu for you. But the big question is at what price. I can safely say it will cost more than £150 for a weber ecu if you can find someone.
As for laptops being plugged in.
Where have you been hiding for the last 20years, laptops have been fitted to a cosworth ecu for decades
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
have a look on l8ecu.com as simon gives out free software to connect to a cosworth ecu for your laptop.
#17
Ask me a question!
iTrader: (1)
![Default](https://passionford.com/forum/images/icons/icon1.gif)
![Grin](https://passionford.com/forum/images/smilies/icon_smile.gif)
Even if you do, using a laptop with the free software above will more than likely avoid having to use a tuner to diagnois problems.
Worst case if you did need a tuner it would cost less to fix over most other systems.
#18
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Luke, you have just contradicted yourself mate.
£360 is for what exactly?
Not the ECU surely! How is that value for money and not overpriced then?
Then you say you can buy all the sensors new, well obviously you can buy any weber sensor new too so there would be no difference in money, if anything you can find secondhand weber sensors for great value for money all over the UK and Europe.
Lastly as you said "a" tuner may map the ecu for you. But the big question is at what price. I can safely say it will cost more than £150 for a weber ecu if you can find someone.
As for laptops being plugged in.
Where have you been hiding for the last 20years, laptops have been fitted to a cosworth ecu for decades
plus loads of after market gimmicks and gadgets like monitors and interfaces etc.
have a look on l8ecu.com as simon gives out free software to connect to a cosworth ecu for your laptop.
£360 is for what exactly?
Not the ECU surely! How is that value for money and not overpriced then?
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
Then you say you can buy all the sensors new, well obviously you can buy any weber sensor new too so there would be no difference in money, if anything you can find secondhand weber sensors for great value for money all over the UK and Europe.
Lastly as you said "a" tuner may map the ecu for you. But the big question is at what price. I can safely say it will cost more than £150 for a weber ecu if you can find someone.
As for laptops being plugged in.
Where have you been hiding for the last 20years, laptops have been fitted to a cosworth ecu for decades
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
have a look on l8ecu.com as simon gives out free software to connect to a cosworth ecu for your laptop.
didn't know about the free software thanks
![Top](https://passionford.com/forum/images/smilies/smile011.gif)
so what is going price for a company in the south of uk to supply and fit a cosworth setup to a S2?
#21
Too many posts.. I need a life!!
![Default](https://passionford.com/forum/images/icons/icon1.gif)
I wish I had looked into the Cosworth L6 or L8 ecu's before I purchased the Haltech.
I would have saved many $$$.
I do like hex numbering too.
I have had some experience with an old Cosworth ECU from the 1980's
It used a programming board for the ecu to make changes.
I would have saved many $$$.
I do like hex numbering too.
I have had some experience with an old Cosworth ECU from the 1980's
It used a programming board for the ecu to make changes.
![](http://i38.photobucket.com/albums/e150/fordcanada/Cosworth_ECU.jpg)
Last edited by Canada1; 11-11-2011 at 02:23 PM.
#22
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Luke, you have just contradicted yourself mate.
£360 is for what exactly?
Not the ECU surely! How is that value for money and not overpriced then?
Then you say you can buy all the sensors new, well obviously you can buy any weber sensor new too so there would be no difference in money, if anything you can find secondhand weber sensors for great value for money all over the UK and Europe.
Lastly as you said "a" tuner may map the ecu for you. But the big question is at what price. I can safely say it will cost more than £150 for a weber ecu if you can find someone.
As for laptops being plugged in.
Where have you been hiding for the last 20years, laptops have been fitted to a cosworth ecu for decades
plus loads of after market gimmicks and gadgets like monitors and interfaces etc.
have a look on l8ecu.com as simon gives out free software to connect to a cosworth ecu for your laptop.
£360 is for what exactly?
Not the ECU surely! How is that value for money and not overpriced then?
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
Then you say you can buy all the sensors new, well obviously you can buy any weber sensor new too so there would be no difference in money, if anything you can find secondhand weber sensors for great value for money all over the UK and Europe.
Lastly as you said "a" tuner may map the ecu for you. But the big question is at what price. I can safely say it will cost more than £150 for a weber ecu if you can find someone.
As for laptops being plugged in.
Where have you been hiding for the last 20years, laptops have been fitted to a cosworth ecu for decades
![Surprised](https://passionford.com/forum/images/smilies/bigcry.gif)
have a look on l8ecu.com as simon gives out free software to connect to a cosworth ecu for your laptop.
for £360 you get a ecu, wasted spark and software so you can map the car. so cheaper then a £100 second hand does it work cosworth ecu + the £400 for a wasted spark conversion
#23
PassionFord Post Whore!!
iTrader: (4)
![Default](https://passionford.com/forum/images/icons/icon1.gif)
Lol this is going to turn into a priceless thread. If I wanted to I would fit l8 not l6, Which is by no means £100. Loom (brand new not 20years old) made specifically for an rs turbo £150 ms ecu which does fully sequencial fuelling, drives t a coil pack directly, launch control, flat shift, closed loop fueling in an OEM class case (with proper automotive class connector) under £400.
Find, fit and map l8 for that then add wasted spark, closed loop fueling and launch control. I know several people who have gone down this route who have been sorely dissapointed because of it.
The usual tuner excuse regarding shoddy assembly and DIY fitting doesn't really apply any more. It would be nice if more tuners stopped slagging and started mapping ms, there's a good market for mapping alone.
Find, fit and map l8 for that then add wasted spark, closed loop fueling and launch control. I know several people who have gone down this route who have been sorely dissapointed because of it.
The usual tuner excuse regarding shoddy assembly and DIY fitting doesn't really apply any more. It would be nice if more tuners stopped slagging and started mapping ms, there's a good market for mapping alone.
#25
Bodger of Blackburn
iTrader: (2)
![Default](https://passionford.com/forum/images/icons/icon1.gif)
nothing wrong with megasquirt, but it's like starting a map from scratch until you know how to work with it.
l8, l6 etc has already had years of development, megasquirt is very very capable and depending on spec of ecu (much like omex in that respect) you can have some pretty awesome functions and make loads of switch-able outputs.
best thing is understanding how an engine operates during various states of engine running.
Thread
Thread Starter
Forum
Replies
Last Post
rsstav
Ford Focus RS Parts for Sale.
4
16-08-2015 08:38 AM
Red_bull
Ford Escort RS Turbo
0
09-08-2015 08:34 AM