Unless you are using a regulated power supply then a 7805 voltage regulator will pop before long. They're just not suited to the nasty electrical environment in automotive applications....jump starts, booster packs, aged alternator rectifiers, dumbasses connecting the battery up wrong, and all sorts of other things, will produce transients and reverse voltages that will overwhelm its protection. An LM2937 would be a much better choice, being designed for automotive environments...so they include protection for reversed polarity (up to 50V) and against the kind of spikes (150V+) that you get from booster packs being connected and such forth. This is not to mention that a 7805's operating temp range is pathetic...the 2937 is rated for -40C/+125C and so can cope with the sorts of temperatures found under bonnets and deep midwinter and such like. Plus its RF protection is vastly superior.
However, a 'Radio Shack'/Maplin employee when asked for such a thing will have the same look on their face as a McDonalds employee when asked for a terrine of foie gras, so you would need to go to a proper distributor to find one (and the capacitors it needs) - or if you pop ÂŁ3 in my paypal I can furnish you with a set. It works in the exact same way (is in the same package too, so it is a straight swap).
Mind you it's hardly a critical application, so it doesn't matter much if it breaks, but still....
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
Budget turbo tips
- binarypunk
- Moderator
- Posts: 1325
- Joined: Thu Feb 21, 2013 1:34 pm
- Location: NE Somerset
- Contact:
Re: Budget turbo tips
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: Budget turbo tips
I used to have an O2 clamp on mine when it was running a JR Powercard and later an eManage blue piggy-back ecu. My understanding of what it does is a little different to yours though.
It does intercept the O2 signal into the ecu but the reason for it is because below 4k rpm the stock ecu tries to run from the sensors and only runs from built-in maps over 4k and at WOT. That means that with a piggy back ecu, if you try to change the fuelling below 4k rpm the ecu will detect the change and fight to bring the AFR back to what it thinks it should be. The O2 clamp I had was set to give 0.5v which according to the ecu was stoich which meant I could do what I liked with the fuelling without the ecu trying to "correct" anything.
It does intercept the O2 signal into the ecu but the reason for it is because below 4k rpm the stock ecu tries to run from the sensors and only runs from built-in maps over 4k and at WOT. That means that with a piggy back ecu, if you try to change the fuelling below 4k rpm the ecu will detect the change and fight to bring the AFR back to what it thinks it should be. The O2 clamp I had was set to give 0.5v which according to the ecu was stoich which meant I could do what I liked with the fuelling without the ecu trying to "correct" anything.
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: Budget turbo tips
Lazza wrote:I used to have an O2 clamp on mine when it was running a JR Powercard and later an eManage blue piggy-back ecu. My understanding of what it does is a little different to yours though.
It does intercept the O2 signal into the ecu but the reason for it is because below 4k rpm the stock ecu tries to run from the sensors and only runs from built-in maps over 4k and at WOT. That means that with a piggy back ecu, if you try to change the fuelling below 4k rpm the ecu will detect the change and fight to bring the AFR back to what it thinks it should be. The O2 clamp I had was set to give 0.5v which according to the ecu was stoich which meant I could do what I liked with the fuelling without the ecu trying to "correct" anything.
Yep your right and a correct and better explanation than mine.
I explained it that way because mine cut's in on boost only and I've set it to give a lean signal 0.35v. It helps with my flat spot best when set this way.
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: Budget turbo tips
That's a good shout on the diesel intercooler - they take more pressure. I should think an M-B sprinter 320 CDi unit would be a good upgrade from there when you're ready?
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: Budget turbo tips
Ran Both days at the Blyton bash and the Turbo stopped on and tight. Ran without a manifold to turbo gasket and so far spot on, no problems. Just a smear of very high temp copper sealant. I hope this is the cure for me.
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
- Mazda Mender
- Site Admin
- Posts: 15090
- Joined: Tue Dec 06, 2011 6:18 pm
- Location: Pie land, in the glen of Wiganshire
- Contact:
Re: Budget turbo tips
We were dealing with a few problems with the turbos over the two days.
M-m
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.
Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 .
Mk 1 Eunos 90 1.6 soul red ..f/ build
MK 2.1/4 Blue V.S Roadster 1.8 99 ..
MK1 1.8 ,white import.. (Ashleighs)
MK1 1.6 yellow J ltd import.f/build
MK 1 1.8 black Tokyo Ltd..f/build
http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.
Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 .
Mk 1 Eunos 90 1.6 soul red ..f/ build
MK 2.1/4 Blue V.S Roadster 1.8 99 ..
MK1 1.8 ,white import.. (Ashleighs)
MK1 1.6 yellow J ltd import.f/build
MK 1 1.8 black Tokyo Ltd..f/build
http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
- nedski
- Serial Poster
- Posts: 733
- Joined: Fri Jun 01, 2012 11:17 pm
- Location: North Kelsey, Market Rasen
- Contact:
Re: Budget turbo tips
If anyone fancies doing a budget build without a PNP ECU this is my rolling road print out from Blyton. Being paranoid about running weak at high revs and also having very little control over anything, this shows at 10-11psi how rich i'm going over 5000 revs and how quickly this makes the power drop off.
My brothers normally aspirated 1.8 mk1 also went on the dyno and had a great long flat usable 114 hp at the wheels.
Anyway here is the pic.
My brothers normally aspirated 1.8 mk1 also went on the dyno and had a great long flat usable 114 hp at the wheels.
Anyway here is the pic.
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: Budget turbo tips
Thought i'd just add to this post.
After a successful year with my basic fuelling and timing mods, I have now succumbed to the megasquirt and all the problems that it brings. Although in the end it's worth it.
So this is not a fitment guide but just a comparison of dyno graphs with and without megasquirt. Nothing extra has been done to the engine.
Please note my graph that's already posted is at the wheels. These new graph's are adjusted to approx flywheel figures.
torque figure with megasquirt
Bhp figure with Megasquirt
For doing nothing but adding a proper ECU the power gains are quite substantial.
So it can be done either way, but in the end the extra control of an ECU when Budget's allow is a must.
After a successful year with my basic fuelling and timing mods, I have now succumbed to the megasquirt and all the problems that it brings. Although in the end it's worth it.
So this is not a fitment guide but just a comparison of dyno graphs with and without megasquirt. Nothing extra has been done to the engine.
Please note my graph that's already posted is at the wheels. These new graph's are adjusted to approx flywheel figures.
torque figure with megasquirt
Bhp figure with Megasquirt
For doing nothing but adding a proper ECU the power gains are quite substantial.
So it can be done either way, but in the end the extra control of an ECU when Budget's allow is a must.
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: Budget turbo tips
Wayne wrote:We were dealing with a few problems with the turbos over the two days.
M-m
A year on at Blyton and nothing changed. Sympathies Carl
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
Return to “Turbo chargers”
Who is online
Users browsing this forum: No registered users and 4 guests