MWSTEWART | 500+ BHP Project | 10/04/2024
MWSTEWART | 500+ BHP Project | 10/04/2024
A few snippests from the Si project I'm working on. Another distraction from the Quattro! I should have this one 'out the door' over Easter.
http://www.mwstewart.co.uk/articles/mk3si2litre/
£1k worth of new Ford bits so far to get it to my standard. I want to improve all the driver interfaces and make sure the car feels & drives as optimally as possible for the spec. A few of the parts that have gone on:
Low mileage Escort 1.8 Zetec iB5 (left). Non-Si/Gti for higher ratios.
Mk7 Fiesta Brakes and Mk2 Mondeo Servo/MC. My brief is 14" wheels and good brakes, Mk7 brakes are 260mm but have the largest pistons yet used by Ford on this size.
HO
Changing Petrol 5th for Diesel 5th. I gave up trying to find a 5th gear puller, so fabricated my own.
Diesel 5th vs 1800 Zetec 5th
Done
Shafts rebuilt, all gen. Ford - although I'm about to do away with standatd O/S and fit something different.
Puma linkage. Did this 10 years ago and is still one of my favourite mods on the Mk3.
ST170 manifold and Saab downpipe.
Lambda relocated to just before cat, and cat entrance area shortened by 2".
Bosses added for standard shield etc. Looks standard:
Rebuilding Recaros. I bought several interiors to get a pair of superb seats. I reset side bolster supports to original position etc.
More to come when I have time to write it up properly.
http://www.mwstewart.co.uk/articles/mk3si2litre/
£1k worth of new Ford bits so far to get it to my standard. I want to improve all the driver interfaces and make sure the car feels & drives as optimally as possible for the spec. A few of the parts that have gone on:
Low mileage Escort 1.8 Zetec iB5 (left). Non-Si/Gti for higher ratios.
Mk7 Fiesta Brakes and Mk2 Mondeo Servo/MC. My brief is 14" wheels and good brakes, Mk7 brakes are 260mm but have the largest pistons yet used by Ford on this size.
HO
Changing Petrol 5th for Diesel 5th. I gave up trying to find a 5th gear puller, so fabricated my own.
Diesel 5th vs 1800 Zetec 5th
Done
Shafts rebuilt, all gen. Ford - although I'm about to do away with standatd O/S and fit something different.
Puma linkage. Did this 10 years ago and is still one of my favourite mods on the Mk3.
ST170 manifold and Saab downpipe.
Lambda relocated to just before cat, and cat entrance area shortened by 2".
Bosses added for standard shield etc. Looks standard:
Rebuilding Recaros. I bought several interiors to get a pair of superb seats. I reset side bolster supports to original position etc.
More to come when I have time to write it up properly.
Last edited by Excursion on Wed Apr 10, 2024 1:40 pm, edited 124 times in total.
- Excursion
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Car: 1990 Ford Fiesta XR2i
Re: Si project.
gong to be a mint si when you finished it mate,
ps whos the bird at the end????????
ps whos the bird at the end????????
- andymcd
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Re: Si project.
Mate, every time I see pictures of your work and the depths you go into I'm just in awe of it all! What makes it even more impressive is that the dribs and drabs that do make onto the site are no doubt only a small fraction of what you've actually been doing
You can use my car when you prise the keys out of my cold dead hands
- Sphinx
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Re: Si project.
epic work, nothing like a nice big pile of new ford parts
whats the puma gear selector like to put on? much modication inlolved?
whats the puma gear selector like to put on? much modication inlolved?
- RS rob
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Re: Si project.
Thanks for the comments guys I've got a full set of genuine panels to go on yet
Rob, Linkage is relatively straight-forward to fit and I willw rite a guide for it. I wouldn't recommend it on a BC box, though. The synchro's aren't up to the speed of shift the new linkage can give.
Rob, Linkage is relatively straight-forward to fit and I willw rite a guide for it. I wouldn't recommend it on a BC box, though. The synchro's aren't up to the speed of shift the new linkage can give.
- Excursion
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Car: 1990 Ford Fiesta XR2i
Re: Si project.
looks good mate any pics of the car
- fiesta_rob
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Re: Si project.
manifold is a really god idea mate, nice
- Ruishy1
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Re: Si project.
- Excursion
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Car: 1990 Ford Fiesta XR2i
Re: Si project.
wow that cleen are you on fiesta-si.com?
- fiesta_rob
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Re: Si project.
fiesta_rob :wow that cleen are you on fiesta-si.com?
No mate I'm not, well, actually I do have an account but choose not to use the site.
- Excursion
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Re: Si project.
ow you should put some pics up it a minter
- fiesta_rob
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Re: Si project.
lol can you not sence his tone?
looks well looked after mate, nice to see them in such good nick
love what your doing to her too, anything planned for the engine? apart from whats been showed already
looks well looked after mate, nice to see them in such good nick
love what your doing to her too, anything planned for the engine? apart from whats been showed already
1800 Zetec 133bhp 140lbs/ft
mk2 pop 1.4i
- jonyb4
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Re: Si project.
jonyb4 :lol can you not sence his tone?
looks well looked after mate, nice to see them in such good nick
love what your doing to her too, anything planned for the engine? apart from whats been showed already
Thanks mate. I might put a low budget ZT in there at some point, but nothing special, I don't want it to become so valuable that I begin to worry about leaving it places etc. Now the Ghia is finished, and this, I want to focus on the Quattro project.
- Excursion
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Re: Si project.
Good work Marky, I like the manifold, thats a good idea! The things you do, they make me feel warm.
:2004 Merc Vito: - :1983 Nissan Datsun 280zx: - :1992 GT Pro Series: - :2012 Mondraker Dune R:
- ~nomad~
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Re: Si project.
~nomad~ :Good work Marky, I like the manifold, thats a good idea! The things you do, they make me feel warm.
I get real warm. You should come round and be the 3rd wheel.
- Excursion
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Re: Si project.
I was born to make you happy.
:2004 Merc Vito: - :1983 Nissan Datsun 280zx: - :1992 GT Pro Series: - :2012 Mondraker Dune R:
- ~nomad~
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Re: Si project.
~nomad~ :I was born to make you happy.
I found a ring in the boot, it still had a finger on it. I get so forgetful, or maybe I just like the risk. The Dark paint hides stains so well
- Excursion
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Re: Si project.
what difference does the puma linkage make dude? does it just swap straight over??
- TANGO.
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Re: Si project.
TANGO. :what difference does the puma linkage make dude? does it just swap straight over??
It's not a straight swap, but it's pretty easy. I will write a guide ASAP.
- Excursion
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Re: Si project.
if you could mate, would appreciate that as i'm thinking of putting one in my si.
cheers bud..
cheers bud..
- TANGO.
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Re: Si project.
I would like to see the guide too. Or just have you do it for me lol
:2004 Merc Vito: - :1983 Nissan Datsun 280zx: - :1992 GT Pro Series: - :2012 Mondraker Dune R:
- ~nomad~
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Re: Si project.
Brilliant project mate and that si is mint!
- Dave G fsi
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Re: Si project.
Nicely done....oooh i'd love to have a pile of new parts like that to put on my car.
What colour is it? it looks black but then it almost looks like a really dark metallic brown kind of colour.
What colour is it? it looks black but then it almost looks like a really dark metallic brown kind of colour.
I have parts for sale!!!!.....Nice parts too!!!
http://www.fiestaturbo.com/forums/lots-of-parts-for-sale-vt185591/
- MattPym
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Re: Si project.
ok newbie post here ...
whats the advantage of putting the 5th gear from the diesel box into the petrol box? and what are the differences in gears from the photo of them both? apart from the size
whats the advantage of putting the 5th gear from the diesel box into the petrol box? and what are the differences in gears from the photo of them both? apart from the size
1.1i poweerrr
- ford_09
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Re: Si project.
the diesel has a longer 5th ratio IIRC so higher top speed, and better fuel economy at cruise
- Ruishy1
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Re: Si project.
ok so when you have changed to 5th it can drive upto a faster speed better/quicker than the petrol gear
makes sense now thats a good idea
makes sense now thats a good idea
1.1i poweerrr
- ford_09
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Re: Si project.
no it would take longer to get to the top speed as its a longer gear, but it would take you to a higher top speed then the petrol one (taking longer to get to it compared toa petrol )
1800 Zetec 133bhp 140lbs/ft
mk2 pop 1.4i
- jonyb4
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Car: 1995 Ford Fiesta Si 16v
Re: Si project.
Petrol 1800 5th is mismatched for the 2.0 IMO. I plotted the graphs using projects utility.
RS1800:
Rebuilt with Diesel 5th:
You can see on the RS1800 graph just how short the 5th is, this is to negate the lack of torque from the 1800 engine. The 2.0 can cope with much more than the 0.87:1 5th.
Adding the 0.76:1 5th gives a nice spread of ratios without too much rev drop between 4th-5th.
I beleive some Escort 1.8 Zetec's had the 0.76:1 5th
RS1800:
Rebuilt with Diesel 5th:
You can see on the RS1800 graph just how short the 5th is, this is to negate the lack of torque from the 1800 engine. The 2.0 can cope with much more than the 0.87:1 5th.
Adding the 0.76:1 5th gives a nice spread of ratios without too much rev drop between 4th-5th.
I beleive some Escort 1.8 Zetec's had the 0.76:1 5th
- Excursion
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Re: Si project.
Very nice project, Mark
Like what you've done with the manifold. Have you worked out the lengths of secondaries? Or have you based it upon the fact that it will without doubt flow better than the standard cast item full stop!
Like what you've done with the manifold. Have you worked out the lengths of secondaries? Or have you based it upon the fact that it will without doubt flow better than the standard cast item full stop!
- Smo
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- - Danny Boy -
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Re: Si project.
Smo :Very nice project, Mark
Like what you've done with the manifold. Have you worked out the lengths of secondaries? Or have you based it upon the fact that it will without doubt flow better than the standard cast item full stop!
lol yea id say second
1800 Zetec 133bhp 140lbs/ft
mk2 pop 1.4i
- jonyb4
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Re: Si project.
In a 4-2-1 manifold the secondary lengths are much less important than the primaries, which remain untouched here. Essentially, though, this was #2 as there's no real analysis behind my choice - it's simply my opinion that this has got to be better than the standard item. The original Zetec Mk3's had a twin tube down pipe but this was discontinued due to problems and replaced in 1993 with the more familiar single tube item.
Good article on manifold design: http://www.btinternet.com/~richard.d.miles/exhaust.html
Good article on manifold design: http://www.btinternet.com/~richard.d.miles/exhaust.html
- Excursion
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Re: Si project.
Excursion :
I beleive some Escort 1.8 Zetec's had the 0.76:1 5th
Any more details on this Mark ?
Good to see the graphs are still making an appearance
Scott
- sjoyce666
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Re: Si project.
sjoyce666 :Any more details on this Mark ?
No details, I'd have to remove the cover plate and measure 5th
- Excursion
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Re: Si project.
I'm going to start stripping my Orion 1.8 LX in the next few days because it had excellent gearing and I want it back in, so I'll let you know what's in that. Spent ages trying to find another box the same without any success Much nicer ratios than the XR2i and RS1800 boxes though!
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