Introduction - Brit wants a turbo in his life and not just in his diesel volvo - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Meet and Greet Say Hi. De-noob yourself.

Reply
 
 
 
LinkBack Thread Tools
Old 12-16-2012, 07:09 PM   #1
Newb
Thread Starter
 
Join Date: Dec 2012
Location: Nottingham, England
Posts: 44
Total Cats: 2
Default Introduction - Brit wants a turbo in his life and not just in his diesel volvo

Hi, I've just joined having read a few interesting threads, particularly on the fabrication side of things and selecting the right turbo for the 1.8 Miata engine. I have a full bodied kit car, similar in design to a Lotus 7 / Caterham or Westfied, but a little prettier. It runs a tuned ford xflow, 8v pushrod motor, which doesn't sound very impressive, but it'll take it from 0-60 in about 4.5 and shake your teeth out on the way! There are some photos in my album.

Anyway, the plan is to replace this classic motor with a 1.8 and gearbox from the Miata (MX-5 over here in UK) and then strap a sensibly sized turbo to it using a custom designed, homemade manifold and run it on a standalone ECU, such as Megasquirt or Omex. I'm looking for 200rwhp, but with minimal lag for road course driving. The car only weighs 530Kgs, so it doesn't need any more power than this.

Cheers, thanks for having me.

Laurence
sylva_phoenix is offline   Reply With Quote
Old 12-16-2012, 07:32 PM   #2
Senior Member
iTrader: (14)
 
Join Date: Oct 2006
Location: South East Florida
Posts: 690
Total Cats: 6
Default

Car looks awesome.


Throw some pictures in this thread, most are too lazy to go to your album.
94mx5red is offline   Reply With Quote
Old 12-16-2012, 07:51 PM   #3
Elite Member
iTrader: (21)
 
Join Date: Jun 2007
Location: Rochester, NY
Posts: 5,689
Total Cats: 560
Default

That is a cool looking ride. Post some pics of the bare chassis if you have any.
rleete is offline   Reply With Quote
Old 12-17-2012, 10:50 AM   #4
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,792
Default

Welcome, sylva_phoenix!
Braineack is offline   Reply With Quote
Old 12-17-2012, 11:23 AM   #5
I take big bites
iTrader: (1)
 
turbofan's Avatar
 
Join Date: Sep 2010
Location: Hurricane, UT
Posts: 6,930
Total Cats: 526
Default

Looks awesome! I think you're definitely on the right track with your plans and it sounds like the car will be absolutely insane when you're all done. Good luck!
turbofan is offline   Reply With Quote
Old 12-17-2012, 11:34 AM   #6
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

Why a 1.8 from a miata when so many better motors are out there?
Saml01 is offline   Reply With Quote
Old 12-17-2012, 01:32 PM   #7
Newb
Thread Starter
 
Join Date: Dec 2012
Location: Nottingham, England
Posts: 44
Total Cats: 2
Default

Quote:
Originally Posted by Saml01 View Post
Why a 1.8 from a miata when so many better motors are out there?
Thanks for the welcome. Reasons for choosing the mx5 engine are several; 1 its a sweet revving twincam, which was based on the bore and stroke of the original Lotus twincam, 2 its very tuneable, 3 it requires no modification to run it longitudinally, 3 there are lots and lots of them out there, 4 parts are cheap, 5 there's a lot of information about how to do the swap, 6 it comes with a free, really strong 5-speed gearbox and finally, its cheap. I considered a few other engines, Ford zetec, vauxhall redtop, rotary, even an alfa v6. This seems the most practical choice. Fitting a turbo is probably overkill, but what the hell......

Regards
sylva_phoenix is offline   Reply With Quote
Old 12-17-2012, 01:38 PM   #8
Elite Member
iTrader: (21)
 
Join Date: Jun 2007
Location: Rochester, NY
Posts: 5,689
Total Cats: 560
Default

years ago, I drove a locost style car that was less than 1600 pounds with about 250 HP. It was very low, and felt insanely quick. Having 200 HP in a car weighing 500 pounds less would be crazy.
rleete is offline   Reply With Quote
Old 12-17-2012, 01:50 PM   #9
Newb
Thread Starter
 
Join Date: Dec 2012
Location: Nottingham, England
Posts: 44
Total Cats: 2
Default

Ha ha, correct.

It will be equivalent to a caterham r400/r500, but with about 25% more torque. At a 5th the price.
sylva_phoenix is offline   Reply With Quote
Old 12-17-2012, 01:55 PM   #10
I take big bites
iTrader: (1)
 
turbofan's Avatar
 
Join Date: Sep 2010
Location: Hurricane, UT
Posts: 6,930
Total Cats: 526
Default

don't you dare leave us hanging without video when this is all said and done.
turbofan is offline   Reply With Quote
Old 12-17-2012, 01:58 PM   #11
Newb
Thread Starter
 
Join Date: Dec 2012
Location: Nottingham, England
Posts: 44
Total Cats: 2
Default

Quote:
Originally Posted by turbofan View Post
don't you dare leave us hanging without video when this is all said and done.
You get "police camera action" on BBC US, right?
sylva_phoenix is offline   Reply With Quote
Old 12-17-2012, 02:31 PM   #12
I take big bites
iTrader: (1)
 
turbofan's Avatar
 
Join Date: Sep 2010
Location: Hurricane, UT
Posts: 6,930
Total Cats: 526
Default

I don't have a TV service currently, I get my BBC fix off Netflix. Should I search that show out?
turbofan is offline   Reply With Quote
Old 12-17-2012, 02:35 PM   #13
Destroyer of Inconel
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 9,642
Total Cats: 954
Default

Quote:
Originally Posted by sylva_phoenix View Post
6 it comes with a free, really strong 5-speed gearbox
I wouldn't go calling the Miata 5 speed "really strong" but for 200hp in this ultralight, it should be just the ticket!

Quote:
Originally Posted by sylva_phoenix View Post
Fitting a turbo is probably overkill, but what the hell......
I like you already!

Please, please, PLEASE!!! Post some more pics!

Also: How hard is it to find parts for late 70's Triumphs over there? I need an intake plenum for a 1974 TR6 2.5L PI
EO2K is offline   Reply With Quote
Old 12-17-2012, 03:43 PM   #14
Newb
Thread Starter
 
Join Date: Dec 2012
Location: Nottingham, England
Posts: 44
Total Cats: 2
Default

sylva_phoenix is offline   Reply With Quote
Old 12-17-2012, 03:44 PM   #15
Newb
Thread Starter
 
Join Date: Dec 2012
Location: Nottingham, England
Posts: 44
Total Cats: 2
Default

That link is nothing to do with me, just something I found on eBay.co.UK. sorry if I'm not supposed to post links to items for sale.

Cheers.
sylva_phoenix is offline   Reply With Quote
Old 12-17-2012, 04:24 PM   #16
Destroyer of Inconel
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 9,642
Total Cats: 954
Default

Nah, you're cool. There are almost no rules around here about that kind of stuff, unless you are spamming. That's an interesting interpretation of "good secondhand condition" haha! That's like $16 in USD, but I'm sure shipping would kill me. Thanks for the link!

That crossflow looks like a damn neat little motor. 1100, 1300 or 1600? We didn't get those in the US in anything, as far as I can tell. Looks like the engine in my friends Spitfire 1500, other than the obviously superior crossflow design. Also, tell me those are 38 or 40mm side draft Webers so I can hate at you

What version of the Mazda BP are you looking at?
EO2K is offline   Reply With Quote
Old 12-17-2012, 04:47 PM   #17
Newb
Thread Starter
 
Join Date: Dec 2012
Location: Nottingham, England
Posts: 44
Total Cats: 2
Default

It's a 1660cc xflow, 8 valve all iron pushrod. This was standard issue in the ford Escort from '75 onward and pretty much formed the staple diet in terms of budget racing in the UK for about 10-20 years. It was fitted in formula Ford, rally cars, 750MC, hillclimbing, sprinting, grass-track everything really.

Mine's had a lot of work, mainly by the guy I bought it from 10 years ago.

High lift 254 CAM, flowed head, lightened and balanced bottom end, 6 spoke flywheel (2.9kg including AP sintered clutch), 1300cc machined pistons to increase CR to around 10.5:1, Unleaded, ported head, double vavle springs and light weight valve train, Bryan Hart dry sump system and, no they're not Webers. They're twin 40 Dell'ortos. It revs to about 7500rpm, but that's pushing it on standard crank and rods. Transmission is a ford Type 9 from a standard issue travelling salesman Ford Sierra running a Mk2 ecort live axle with 4.1:1 LSD. Almost all 7 type cars in the UK use the Type 9 box, hence my comment about the mx5 transmission being "strong". It's all relative.

Cheers
sylva_phoenix is offline   Reply With Quote
Old 12-17-2012, 04:48 PM   #18
Newb
Thread Starter
 
Join Date: Dec 2012
Location: Nottingham, England
Posts: 44
Total Cats: 2
Default

I was looking at a 1.8 VVT engine from a mk2.5, but I'll take any advice you offer. VVT seems like something to go wrong that isn't really necessary.

Cheers
sylva_phoenix is offline   Reply With Quote
Old 12-17-2012, 04:52 PM   #19
I take big bites
iTrader: (1)
 
turbofan's Avatar
 
Join Date: Sep 2010
Location: Hurricane, UT
Posts: 6,930
Total Cats: 526
Default

Haha indeed the Mazda transmission is at least a bit stronger than the T9 Ford box. I used to play with Merkur XR4Tis and many would swap the T9 for the Mustang T5.

I would say that for your build you don't need to spend the extra money for the newer VVT engine. I'd go with a '99 engine -- good head, crappy exhaust but you'll be scrapping that anyway.
turbofan is offline   Reply With Quote
Old 12-17-2012, 04:59 PM   #20
Destroyer of Inconel
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 9,642
Total Cats: 954
Default

I shall bring the hate Anything has to be better than the damn emissions spec Zenith Stromberg 175CDs on my 6.

I really hope you start a build thread here, or give us a link if its offsite.

Edit: VVT all depends on what you want to do to control it. You can do a super basic DIYPNP and run a BP4W (exactly like I have in my car) or you get the VVT BP6D and step up to a MS3, AEM or something like DIYAutoTune's VVTuner to control the VVT. Bonus points on the VVT motor is it runs higher compression (in the US anyway) and will make a shade more power out of the box. You don't have to control the VVT out of the box either. We have a few guys running the BP6D (01-05 US) head on a BP4W (99-00 US) bottom end on the stock BP4W ECU and it seems to do fine.

I think in EU/UK, you guys got the BPZ3 instead of the BP6D as the VVT engine, so the specs may be a little different. From what I've read, the BP4W is still the same though.

BP4W if you want simple, BP6D/Z3 if you want to make the investment to support the VVT, but you can always do this later.

Do you plan on building an engine, or just running something from a wrecker?

Last edited by EO2K; 12-17-2012 at 05:14 PM.
EO2K is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
ISO 1.6 turbo cast iron manifold cale saurage DIY Turbo Discussion 16 10-01-2015 12:25 PM


Tags
brit, phoenix, sylva

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:48 PM.