I did the same on an old Rover P6 2000TC. The engine was very coked up,the valves had so much carbon build-up they were almost a perfect valve-plug, I had to chip it off with a chisel before cleaning them up, followed by the head ports & chamber, lapping in the valves then re-shimming the buckets. The casting was actually very good so no need for any smoothing. It's amazing really how bad the quality of fuel was back then compared to how clean it is now.
I really wish I'd kept that car. Traded it in for a 1985 Rover 216
What you put in, you'll get back ten fold
***** THIS IS VERY IMPORTANT TO THE SITE AND HELPING YOU,OTHERWISE IT CLOSES AND ALL THIS ON LINE GARAGE IS GONE FOR GOOD*****
Greetings and welcome to menders, this site was built for every owner that might need her to help keep those bills low and also keep them on the road where they belong, she is run by very passionate enthusiasts owners for passionate enthusiastic owners, see her like a on line garage, there is a lot of tech stuff hopefully explained for everyone to use, if there is something you cannot get your head around, or you feel that there is a strong walk through guide missing that needs creating by one of us or from yourselves, please let us know, we are also on false book and youtube, which as short tech vids to help, and again if you feel there is a vid that would help please get it touch.
the menders is free, but like everything there is a cost to run things and bills( we are just happy its not a heating cost), so if we have saved you hundreds, please throw a small donation in the pot so we can keep on going to carry on helping others in the same way .
*** we are currently looking for a sponsor for this year, so if you have the passion and can see this sites worth to everyone , please get in touch and step forward to help***
And thank heavens that we are now on the way back up the brighter ,warmer longer days, "come on summer", and lets see those project builds.
M-m
Greetings and welcome to menders, this site was built for every owner that might need her to help keep those bills low and also keep them on the road where they belong, she is run by very passionate enthusiasts owners for passionate enthusiastic owners, see her like a on line garage, there is a lot of tech stuff hopefully explained for everyone to use, if there is something you cannot get your head around, or you feel that there is a strong walk through guide missing that needs creating by one of us or from yourselves, please let us know, we are also on false book and youtube, which as short tech vids to help, and again if you feel there is a vid that would help please get it touch.
the menders is free, but like everything there is a cost to run things and bills( we are just happy its not a heating cost), so if we have saved you hundreds, please throw a small donation in the pot so we can keep on going to carry on helping others in the same way .
*** we are currently looking for a sponsor for this year, so if you have the passion and can see this sites worth to everyone , please get in touch and step forward to help***
And thank heavens that we are now on the way back up the brighter ,warmer longer days, "come on summer", and lets see those project builds.
M-m
Head work, Skim and simple porting.
Re: Head work, Skim and simple porting.
Lazza
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
- binarypunk
- Moderator
- Posts: 1325
- Joined: Thu Feb 21, 2013 1:34 pm
- Location: NE Somerset
- Contact:
Re: Head work, Skim and simple porting.
Lazza wrote:Traded it in for a 1985 Rover 216
Oh my good lordy.
Jon - UK Mk1 1.6 1993 Classic Red
Check out my MX5 mods and tools:
http://www.binarypunk.co.uk
Need spares? Go to Autolink!
http://www.autolinkuk.co.uk/
Check out my MX5 mods and tools:
http://www.binarypunk.co.uk
Need spares? Go to Autolink!
http://www.autolinkuk.co.uk/
Re: Head work, Skim and simple porting.
Lazza wrote:Traded it in for a 1985 Rover 216
Oooooooooo, what a sad day ............ Were you on drugs luvvie?
Paul & Angela.
'93 1.8 in Super Silver
Fully blinged up (thanks M-m)
Lowered into the weeds hung on Gaz Gold Pro's.
'93 1.8 in Super Silver
Fully blinged up (thanks M-m)
Lowered into the weeds hung on Gaz Gold Pro's.
Re: Head work, Skim and simple porting.
Badknee wrote:Lazza wrote:Traded it in for a 1985 Rover 216
Oooooooooo, what a sad day ............ Were you on drugs luvvie?
I just needed something reliable and a 7 year old Rover 216 is a lot more reliable than a 25 year old P6. I really regret it now, it was a lovely car and I've never replaced it in my heart, not even the MX5 matches it for character.
Lazza
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
Re: Head work, Skim and simple porting.
I think we all have a car that we would like back/should never have parted with. I have two, a 1962/3 Austin Cambridge and a 1969 Mk1 Ford Escort with a 1300 half race engine and twin Dellorto carbs, by that were fast in its day and worth a lot of money now. Miss them both now.
Paul & Angela.
'93 1.8 in Super Silver
Fully blinged up (thanks M-m)
Lowered into the weeds hung on Gaz Gold Pro's.
'93 1.8 in Super Silver
Fully blinged up (thanks M-m)
Lowered into the weeds hung on Gaz Gold Pro's.
Re: Head work, Skim and simple porting.
Yep... In fact I'm going to start a new thread about it
Lazza
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
- nedski
- Serial Poster
- Posts: 733
- Joined: Fri Jun 01, 2012 11:17 pm
- Location: North Kelsey, Market Rasen
- Contact:
Re: Head work, Skim and simple porting.
Well the first head is ready for my brothers green mk1. I would have cleaned it up and painted it but hey ho, if he can't be bothered then I definitely cant. Lazy Ar**e.
The Blocks cleaned off ready.
Head gasket in place.
The dowel holes in the head have lost the chamfer to help locate them. so ive put it back.
So it's back on.
This one has to wait now untill the Blink cams arrive.
Onto the second head for my lads. Hopefully it won't take as long now. Although I've found that if I start with coarse tools to speed up the proccess I spend as much time cleaning up burr marks. I guess it's just a long labour intensive job without any short cuts.
The Blocks cleaned off ready.
Head gasket in place.
The dowel holes in the head have lost the chamfer to help locate them. so ive put it back.
So it's back on.
This one has to wait now untill the Blink cams arrive.
Onto the second head for my lads. Hopefully it won't take as long now. Although I've found that if I start with coarse tools to speed up the proccess I spend as much time cleaning up burr marks. I guess it's just a long labour intensive job without any short cuts.
Mk1 1.6 Turbo. Gaz shocks. Tr Lane roll bar.
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
- nedski
- Serial Poster
- Posts: 733
- Joined: Fri Jun 01, 2012 11:17 pm
- Location: North Kelsey, Market Rasen
- Contact:
Re: Head work, Skim and simple porting.
Just to bring my lads up to date with the Head going back on. Stand back and let the 16yr old get on with it. I'm playing teacher.
This is also the ex/inlet cam swap, so 2 exhaust cams.
dremmel brush on the throttle body
I'm much happier that we get to clean and paint this one.
This is also the ex/inlet cam swap, so 2 exhaust cams.
dremmel brush on the throttle body
I'm much happier that we get to clean and paint this one.
Mk1 1.6 Turbo. Gaz shocks. Tr Lane roll bar.
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
- BenF
- Epic Poster
- Posts: 1233
- Joined: Sun Dec 23, 2012 12:50 pm
- Location: Bath, Swindon or Noordwijk(NL)
Re: Head work, Skim and simple porting.
Good work mate! Answered one of my questions to you on my build, sorry I wasn't paying attention!!
For the benefit of readers who are tempted to have a go themselves, there are benefits to having three-angle seats at this stage (or radius seats if you're feeling more flush) and if you're popping the head into a machine shop for a skim (advisable, few are true) it wouldn't be a lot more ££ to have the seats recut at the same time
It's also useful to oil/wd40 the water galleries if you're tempted to get frisky with the grinding stone when porting and take more meat out of the head - the oil/wd will wisp up smoke of you get near the water passages and give you a warning to stop!
For the benefit of readers who are tempted to have a go themselves, there are benefits to having three-angle seats at this stage (or radius seats if you're feeling more flush) and if you're popping the head into a machine shop for a skim (advisable, few are true) it wouldn't be a lot more ££ to have the seats recut at the same time
It's also useful to oil/wd40 the water galleries if you're tempted to get frisky with the grinding stone when porting and take more meat out of the head - the oil/wd will wisp up smoke of you get near the water passages and give you a warning to stop!
BRG MKI '90 F-SPEC
'ad victorem ire spolia'
my build (condensed)
Sponsor - PROTECH SHOCKS
Supplier - AUTOLINK
Engine builder & sponsor - BASSET DOWN BALANCING
Machine shop - GRACE ENGINE DEVELOPMENTS
'ad victorem ire spolia'
my build (condensed)
Sponsor - PROTECH SHOCKS
Supplier - AUTOLINK
Engine builder & sponsor - BASSET DOWN BALANCING
Machine shop - GRACE ENGINE DEVELOPMENTS
- nedski
- Serial Poster
- Posts: 733
- Joined: Fri Jun 01, 2012 11:17 pm
- Location: North Kelsey, Market Rasen
- Contact:
Re: Head work, Skim and simple porting.
Benf .
What is two part foam on your other thread? For everyone's benefit of course.
As for my brothers cams they are part of a blink kit (piper re grind). I'll get back to you on that.
They probably will call them " Our secret superfast road/race cam profile" as most of these people do nowadays.
I was talking to my local machine shop about the 3 angle seat and he thought about 1% gain for the cut.
when porting I have opened out the seat and this also helped merge into the bowl and reduce that huge lip each head seams to have. It must be a fair restriction to flow.
What is two part foam on your other thread? For everyone's benefit of course.
As for my brothers cams they are part of a blink kit (piper re grind). I'll get back to you on that.
They probably will call them " Our secret superfast road/race cam profile" as most of these people do nowadays.
I was talking to my local machine shop about the 3 angle seat and he thought about 1% gain for the cut.
when porting I have opened out the seat and this also helped merge into the bowl and reduce that huge lip each head seams to have. It must be a fair restriction to flow.
Mk1 1.6 Turbo. Gaz shocks. Tr Lane roll bar.
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
- BenF
- Epic Poster
- Posts: 1233
- Joined: Sun Dec 23, 2012 12:50 pm
- Location: Bath, Swindon or Noordwijk(NL)
Re: Head work, Skim and simple porting.
That figure is probably about right, but it'll vary depending on how good the injectors are - minimising eddy currents helps more with good injectors and fuel pressure and it contributes more to a better/cleaner burn. Worth doing in my book!
Two-part foam is used to take a mould of the port shape (tricky on a 16v but doable if you have soft foam) so you can make sure they're all the same shape, and volume if you put them into water) although we may be getting a little bit deep on the techy front now!!!!!!!!!!
edit: this is the kind of foam http://www.mbfg.co.uk/foam-materials/foam-soft.html NOT the stuff that sets hard!!
Two-part foam is used to take a mould of the port shape (tricky on a 16v but doable if you have soft foam) so you can make sure they're all the same shape, and volume if you put them into water) although we may be getting a little bit deep on the techy front now!!!!!!!!!!
edit: this is the kind of foam http://www.mbfg.co.uk/foam-materials/foam-soft.html NOT the stuff that sets hard!!
BRG MKI '90 F-SPEC
'ad victorem ire spolia'
my build (condensed)
Sponsor - PROTECH SHOCKS
Supplier - AUTOLINK
Engine builder & sponsor - BASSET DOWN BALANCING
Machine shop - GRACE ENGINE DEVELOPMENTS
'ad victorem ire spolia'
my build (condensed)
Sponsor - PROTECH SHOCKS
Supplier - AUTOLINK
Engine builder & sponsor - BASSET DOWN BALANCING
Machine shop - GRACE ENGINE DEVELOPMENTS
- nedski
- Serial Poster
- Posts: 733
- Joined: Fri Jun 01, 2012 11:17 pm
- Location: North Kelsey, Market Rasen
- Contact:
Re: Head work, Skim and simple porting.
Yeh thats techy. These are freebies lol.
Mk1 1.6 Turbo. Gaz shocks. Tr Lane roll bar.
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
- BenF
- Epic Poster
- Posts: 1233
- Joined: Sun Dec 23, 2012 12:50 pm
- Location: Bath, Swindon or Noordwijk(NL)
Re: Head work, Skim and simple porting.
nedski wrote:Yeh thats techy. These are freebies lol.
...practice for yours surely
You can go mental on yours mate, seeing as you have a blower
BRG MKI '90 F-SPEC
'ad victorem ire spolia'
my build (condensed)
Sponsor - PROTECH SHOCKS
Supplier - AUTOLINK
Engine builder & sponsor - BASSET DOWN BALANCING
Machine shop - GRACE ENGINE DEVELOPMENTS
'ad victorem ire spolia'
my build (condensed)
Sponsor - PROTECH SHOCKS
Supplier - AUTOLINK
Engine builder & sponsor - BASSET DOWN BALANCING
Machine shop - GRACE ENGINE DEVELOPMENTS
- nedski
- Serial Poster
- Posts: 733
- Joined: Fri Jun 01, 2012 11:17 pm
- Location: North Kelsey, Market Rasen
- Contact:
Re: Head work, Skim and simple porting.
Oh I wish.
I've forgot the exact quote..
" Motor racing is all about money. How fast do you want to go? "
Nope another year for me as is with the megasquirt having fun. Then maybe some more upgrades.
Iv'e still not finished my man shed yet.
I've forgot the exact quote..
" Motor racing is all about money. How fast do you want to go? "
Nope another year for me as is with the megasquirt having fun. Then maybe some more upgrades.
Iv'e still not finished my man shed yet.
Mk1 1.6 Turbo. Gaz shocks. Tr Lane roll bar.
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
- nedski
- Serial Poster
- Posts: 733
- Joined: Fri Jun 01, 2012 11:17 pm
- Location: North Kelsey, Market Rasen
- Contact:
Re: Head work, Skim and simple porting.
Sorry it might be confusing but I'm working on two cars and heads.
My lad Georges car.
-40 thou head skim, ported, port matched on inlet, valve de-shrouded, Slight work to valves, exhaust/inlet cam swap (2 exhaust cams) Skuzzle clock chipped ecu, De cat.
My brothers.
-40 thou head skim, ported, port matched on inlet, valve de-shrouded, Slight work to valves, piper fast road cams, Megasquirt, de-cat
So these arrived today for my brothers and will be fitted over the next week or so. The blink bit is a megasquirt.
And these are the cam details .
My lad Georges car.
-40 thou head skim, ported, port matched on inlet, valve de-shrouded, Slight work to valves, exhaust/inlet cam swap (2 exhaust cams) Skuzzle clock chipped ecu, De cat.
My brothers.
-40 thou head skim, ported, port matched on inlet, valve de-shrouded, Slight work to valves, piper fast road cams, Megasquirt, de-cat
So these arrived today for my brothers and will be fitted over the next week or so. The blink bit is a megasquirt.
And these are the cam details .
Mk1 1.6 Turbo. Gaz shocks. Tr Lane roll bar.
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
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