Dewis Motorsport's supercharged Astra coupe 2.2

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Thread: Dewis Motorsport's supercharged Astra coupe 2.2

  1. #576
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    So today I corner weighted the car, was always hoping for around 1050kg so this was pretty close to that, this is the weight without me in and car has about 6 litres of fuel in it.


    Car has a good front to back ratio which should help the handling


    And after lots of coilover adjustment I settle on this, almost 50/50 but I'm tight on time and knowing I will re do again after I get round to fitting a front splitter



    Weight with me in it, I imagine race weight will be closer to 1185kg with the extra fuel


    My last dyno was 243bhp but I have a slightly smaller charger pulley on now so I imagine power to be 250bhp, so that makes 215bhp per ton and 182whp per ton so I'm 18bhp inside my class B category of 200whp per ton

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  3. #577
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    All looks super duper. You just need to learn to drive now!

    I would hate to have to lap you... Again.

  4. #578
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    Quote Originally Posted by Craig-S View Post
    All looks super duper. You just need to learn to drive now!

    I would hate to have to lap you... Again.
    Ha ha pot kettle! And lapping a pug 206 with about 130bhp and 1080kg in a nova with 230bhp and about 850kgs at mallory......if you didn't I'd of been worried tbh

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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    Had a look and there is a fair bit on the interweb about different techniques.
    NOTE, these are my thoughts and opinions, sometimes I'm wrong ;-)

  7. #580
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    Finished off the last few mods, replaced the old battery and gave the insides of the doors a quick squirt and modded the door pull wires to open the door with a pull on any part



    Then made myself some spoiler uprights, I've copied the original btcc astra design which allows three adjustment settings



    Test fit after drilling the boot


    Made some spreader and strengthening plates, the spoiler is strong enough for me to do pull myself onto it with all my weight


    Squirt of paint



    And final fitting



    So race day at Donington Park, few pics from the day, was a very wet qualifying which put me about middle of the pack which was good to say it was my first drive on the track and of the car and in the wet.




    The track dried out a bit in the afternoon and had a dry line so put the drys back on



    Race was going well climbing up a few places and having a good battle with the skyline r32 gtr (480bhp) realing him in on the braking and corner speed but he had the legs on the straight. Going into the sixth lap the car spat the oil cooler feed hose off mid corner chucking oil onto the tyres and causing me to spin into the gravel. Only damage to shell was a cracked wing mirror glass but the engine is toast.

    Put it on the trailer and cracked open the beers to enjoy the rest of the weekend of racing and will deal with the engine this week. Next race is at Silverstone in 5 weeks.


  8. #581
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    So put the oil hose back on today and filled her up with some oil and ran her up and no knocking so happy days. Will be making some better hoses up to prevent it happening again.

    Removed all the gravel and gave it a wash


    Few pics my friend took on the day, the coupe is just a timeless shape imo



  9. #582
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    I had the rallycar do that at Donington last year.. got it recovered, fixed the hose, filled with oil and out we went.

    One thing I would say is that we had no knocking and used the car for another 3-4 events afterwards but when we did strip it, there was a lot more wear on the bearings than there should have been for that amount of use and we ended up having the crank reground. My point is that it might be worth checking them now, rather than later and having a bigger problem to deal with.

    Paul..

  10. #583
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    Quote Originally Posted by RallyMarshal View Post
    I had the rallycar do that at Donington last year.. got it recovered, fixed the hose, filled with oil and out we went.

    One thing I would say is that we had no knocking and used the car for another 3-4 events afterwards but when we did strip it, there was a lot more wear on the bearings than there should have been for that amount of use and we ended up having the crank reground. My point is that it might be worth checking them now, rather than later and having a bigger problem to deal with.

    Paul..
    Cheers Paul, I plan to drop the oil and see if there is any glitter, I'd be amazed if no damage was done at all. This engines old at about 138k and is totally standard internally and was just going to be used till a forged one is built. I'm going to crack on with that build and thankfully have a few spare engines to nick parts from should I have to replace crank etc

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    Thumbs up Re: Dewis Motorsport's supercharged Astra coupe 2.2

    Quote Originally Posted by dewismotorsport View Post
    Cheers Paul, I plan to drop the oil and see if there is any glitter, I'd be amazed if no damage was done at all. This engines old at about 138k and is totally standard internally and was just going to be used till a forged one is built. I'm going to crack on with that build and thankfully have a few spare engines to nick parts from should I have to replace crank etc

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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    Easy enough to drop the sump and check the big end shells and, if needed, replace them.

    BTW, what brand and type of fitting were you using? There are push on ones that are supposed to be perfectly safe but I am rather suspicious of them.
    NOTE, these are my thoughts and opinions, sometimes I'm wrong ;-)

  13. #586
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    They are just a push on hose with two hi grip jubilee clips on. Going to change for dash fittings and braided hose or hydraulic hose crimped fittings next

  14. #587
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    Mate of mine Mark White was there in his Civic EP3.

    Your coupe looks stunning I do have to say
    Ein Projekt, das ist eine nie endende Entwicklung
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    WIP - Mk3 Astra More Door

  15. #588
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    Quote Originally Posted by Kev_G View Post
    Mate of mine Mark White was there in his Civic EP3.

    Your coupe looks stunning I do have to say
    Yeah he was unfortunately he suffered a brake fire.

    Cheers I'm really happy with the look, just a front splitter to be added now

  16. #589
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    Good going on the weight, that's a cracking figure for a car of that size!

  17. #590
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    Re: Dewis Motorsport's supercharged Astra coupe 2.2

    Quote Originally Posted by Nemesis View Post
    Good going on the weight, that's a cracking figure for a car of that size!
    Yeah made alk the spot weld drilling worth while still a bit that could come out of the doors but tbh once the splitter goes on that will be cancelled out.

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