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Author: Subject: Normally aspirated Cosworth
mookaloid

posted on 29/8/05 at 09:24 PM Reply With Quote
Normally aspirated Cosworth

Anyone here put a cossie head on a pinto block?

I am thinking ahead to next year, naturally I want more power from my motor about 250 bhp should do it

How easy is this if I put a cossie head with suitable porting on my 205 pinto block? would I get the power I am looking for? - is my type nine up to it? How much would this cost me?

Thoughts anyone?

Cheers

Mark

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gazza285

posted on 29/8/05 at 09:32 PM Reply With Quote
Without the turbo or with.

Without, loads of money. The ports are tiny and need opening up a hell of a lot, then naspi camshafts, verniers, pistons, carbs, exhaust manifold, and your Type Nine isn't up to it.

With turbo, loads of money. Your crank, rods and pistons are not up to it, new induction and fuel pump needed, new exhaust and your Type Nine isn't up to it.

Cheaper to get a complete turbo running gear and swap the lot in. If you want it naspi then its going to cost you big whatever you do.

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cidersurfer

posted on 29/8/05 at 10:00 PM Reply With Quote
Shamelessly stolen from the WSCC...

Suggest you invest in a copy of Des Hammil's "How to Powertune Ford SOHC" ( ISBN 1-874105-81-2) which has a 20 page section on N/A Cosworth and Pintworths.

In summary, if you put a standard Cossie head on a Pinto block you'll see around 170 BHP. Looks good but less effective than a big valve pinto head. Revs would be limited to 7000 but a proper cossie bottom end should be OK to 9000

You need to increase compression to around 11:1 by fitting raised top forged pistons. Next the head will need extensive and expensive machining to open up both inlet and exhaust ports. The hydraulic followers will need replacing with solid ones and the cams changed for ones of higher duration and possibly lift (depends on power output you want but note you would need special valvesprings with higher lift cams to prevent valve binding).

With suitable carbs (45 or possibly 48's), inlet manifold and vernier pulleys, you should see 220-240 bhp.

Good thread here





shimming solid lifters is a job for a friend...

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TPG

posted on 29/8/05 at 10:27 PM Reply With Quote
Mark.2ltr zetec on t/bodies and cams do 220 reilable.Should be cheap.....No.I'm keeping mineWill the MT75 fit a Mk Frame?should do





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mookaloid

posted on 30/8/05 at 08:34 AM Reply With Quote
Thinking about this, I really need over 250 BHP

Can a Honda S2000 motor be tuned or chipped to achieve this?

The cosworth option looks as if it is going to be tricky and expensive.

The Honda option will mean more work with mountings and exhaust etc but could work out cheaper?

anyone used one of these?

Cheers

Mark

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Gav

posted on 30/8/05 at 08:55 AM Reply With Quote
Surley you dont need that much bhp for the roads around Masham!, nearly killed my self multiple times going from Thirsk to Hawes on a bike!
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mookaloid

posted on 30/8/05 at 09:07 AM Reply With Quote
quote:
Originally posted by Gav
Surley you dont need that much bhp for the roads around Masham!, nearly killed my self multiple times going from Thirsk to Hawes on a bike!


True.........

However I am competing with Caterhams and Westfields on the hill climbs and I need more power if I'm going to close the (quite large) gap between me in my Pinto MK and the Duratec/XE/etc exotic stuff

Cheers

Mark

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Volvorsport

posted on 30/8/05 at 09:09 AM Reply With Quote
could just pay out £15k for a millington diamond series !

why dont you just turbo the pinto engine ?





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Gav

posted on 30/8/05 at 09:50 AM Reply With Quote
I knew id seen something about tuning the S2000 engine somewhere

http://ppcmag.co.uk/forum/topic.asp?TOPIC_ID=33

HTH

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mookaloid

posted on 30/8/05 at 12:28 PM Reply With Quote
quote:
Originally posted by Volvorsport
could just pay out £15k for a millington diamond series !

why dont you just turbo the pinto engine ?


Millington - drool

Turbo - not keen - probably without a good reason but I really want to stay normally aspirated.

Cheers

Mark

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mookaloid

posted on 30/8/05 at 12:29 PM Reply With Quote
quote:
Originally posted by Gav
I knew id seen something about tuning the S2000 engine somewhere

http://ppcmag.co.uk/forum/topic.asp?TOPIC_ID=33

HTH

Mmmm interesting..

Thanks for that

Cheers

Mark

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cidersurfer

posted on 30/8/05 at 05:27 PM Reply With Quote
Carbon Fibre S2000 bellhousing to type 9...


Still being developed by one of the Westfield guys...

[Edited on 30/8/05 by cidersurfer]





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Volvorsport

posted on 30/8/05 at 06:23 PM Reply With Quote
is that autoclaved ?





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crbrlfrost

posted on 30/8/05 at 06:33 PM Reply With Quote
why bother, other than being way cool, when the s2000 already has a rear drive trans. But, on another thought, the new honda motors spin in the direction god intended, finally, so why not just mate up an K20vtec? Anyway, happy building.
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mookaloid

posted on 30/8/05 at 07:33 PM Reply With Quote
mmmmmmmmm

I like that

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NS Dev

posted on 31/8/05 at 11:25 AM Reply With Quote
quote:
Originally posted by crbrlfrost
why bother, other than being way cool, when the s2000 already has a rear drive trans. But, on another thought, the new honda motors spin in the direction god intended, finally, so why not just mate up an K20vtec? Anyway, happy building.


reason is that the honda ratios are no good for hillclimbing and sprinting (despite there being 6 of them!) and gearkits are readily available off-the shelf (from Quaife) in the UK to turn the std type 9 ford box into a six speed sequential with ideal ratios.

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TPG

posted on 31/8/05 at 06:35 PM Reply With Quote
has anyone thought of a reason not to run a Honda engine though a.n.other rearwheel drive box?Wait....Yes they run "backwards" and you'll need a conversion plate.But turn the diff over,drain becomes breather etc etc.Careful with the oil level blah blah blah.Apart form the engine to 'box 'plate it should be worth a try?





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TPG

posted on 31/8/05 at 06:37 PM Reply With Quote
Ohhh!!Nissan engines.200zx turbo etc etc.Or Primera 16v 2ltrs.Quatum run them in the napier thing,We should of thought about this at Harrogate...hmmmm





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Liam

posted on 31/8/05 at 08:26 PM Reply With Quote
Aaaghhhhh!!!! There's like, a hundred current threads that mention this: HONDA S2000 ENGINE DOES NOT SPIN BACKWARDS!!

Just had to get that off my chest No offence.

Liam

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TPG

posted on 1/9/05 at 06:03 PM Reply With Quote
.nahhh.I mean the other units found in accords and civics





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