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Supercharged K20a2 Vtec - Race Spec


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#991 MotorinFool

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Posted 08 April 2015 - 04:40 PM

Looking good!  

How do you like the R888's?  I need to find something DOT legal here in the states so I can get my minibusa road legal.  Only downside is finding a tire size that fits.  What size wheels are you running front and back.  My front are 7"x13" and rears are 9"x13".  Only thing that I think would fit are the 225/45/13 R888's.  I know those would fit the front but would be pushing it on the rear.  It is so hard to find tires here in the states, especially trying to not spend my life savings.    



#992 cptkirk

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Posted 09 April 2015 - 07:58 AM

Looking good!  

How do you like the R888's?  I need to find something DOT legal here in the states so I can get my minibusa road legal.  Only downside is finding a tire size that fits.  What size wheels are you running front and back.  My front are 7"x13" and rears are 9"x13".  Only thing that I think would fit are the 225/45/13 R888's.  I know those would fit the front but would be pushing it on the rear.  It is so hard to find tires here in the states, especially trying to not spend my life savings.    

 

 

I am running:

 

Front - 7x13 rim with 185/60 R13 R888

Rear - 8x13 rim with 225/45 R13 R888

 

You could easily get the 225/45 to fit a 9" rim. and if you want wider than 185 on the front you could go 205/60 (R888) but be aware the sidewalls are massive...I was glad to get rid of mine as the tyre roll on the rear was considerable. Conversely the tyre roll on the front 185/60 is virtually none existent, I think this is due to there being very little weight on the front of the car...

 

I get on fine with them and recently I have been playing with pressures and made good gains.....That said I haven't had any other make of tyre on the car.

 

 

 

Here is the difference between 205/60 (on the car) and 225/45:

 

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Edited by cptkirk, 09 April 2015 - 08:01 AM.


#993 MotorinFool

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Posted 09 April 2015 - 03:52 PM

Thanks for the reply! This helps a lot, thanks!



#994 cptkirk

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Posted 16 April 2015 - 07:08 AM

Flowmaster DBX Silencer Setup

 

I have been busy working on the car, trying to get it all back together for a track day at Goodwood on May 25th (Bank holiday Monday).

 

Among many other things I test fitted the exhaust last night, not much more to say than that really at this point.

 

I don't think the photo's do it justice but here they are:

 

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#995 jimmorris3

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Posted 16 April 2015 - 12:09 PM

Looks very very good, did you start it to see if the noise was massively different ? 

Jim



#996 cptkirk

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Posted 17 April 2015 - 07:19 AM

Looks very very good, did you start it to see if the noise was massively different ? 

Jim

 

No Jim, I didnt, to be fair on tickover its pretty bl00dy quiet and didnt want to be revving it without tail pipes directing possible fuel over-run flames away from the car. Considering I've only ever had absorption cans on it before these should make a massive difference and by putting them in parallel I am reducing the back pressure they will inevitably create due to their design.

 

I am making a housing for the air filter to sit in that is going to be fed by 3" piping to the two scoops on either side of the car, this will reduce the intake noise/whine of the SC and by sucking in from both sides should half the amount of intake noise seen by trackside decibel meters (there's never one on both sides of the track at any one point).

 

To be fair there are a lot of tracks that you wouldn't need to go this level of noise reduction for, however Goodwood is really strict and there db meters are linked to the local council offices so anyone going over the limit get black flagged and registration number reported. Its more so that they can be seen to be "doing something about it". And as Goodwood is less than 10 miles from my house it seems a good idea to get in their good books as so far every time I get black flagged. Annoyingly though the last two times I've been pulled it was when there was another vehicle involved but as mine has always been the noisy one I get the naughty noise sticker on my car......



#997 dondo

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Posted 21 April 2015 - 12:50 AM

Love the way you say '' I am making a housing for the air filter to sit in'' along with the project throttle blipper out sourcing inner wheel arches and your 9 to 5 job, wish I has a 10th of your skills, I am sure everyone owes you a huge thanks for all your help on this forum. 

 

So have paid my money for this years Mini Clan Run only 111 miles plus the 45 from my house so 312 all round

 

 

2015 Thistle Run      

The miniclan are delighted to announce that the date for this year's Thistle Run is Sunday 24th of May The start point will be Blair Drummond Safari park, and it is hoped that the end point will again be Fort William Shinty club car park.

 

 

 

 

   
,

 

 

 

 

Don


Edited by dondo, 21 April 2015 - 01:03 AM.


#998 cptkirk

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Posted 21 April 2015 - 07:55 AM

Love the way you say '' I am making a housing for the air filter to sit in'' along with the project throttle blipper out sourcing inner wheel arches and your 9 to 5 job, wish I has a 10th of your skills, I am sure everyone owes you a huge thanks for all your help on this forum. 

 

So have paid my money for this years Mini Clan Run only 111 miles plus the 45 from my house so 312 all round

 

 

2015 Thistle Run      

The miniclan are delighted to announce that the date for this year's Thistle Run is Sunday 24th of May The start point will be Blair Drummond Safari park, and it is hoped that the end point will again be Fort William Shinty club car park.

 

Thanks for the Kind words Don....When I started down this road there was little information and what there was was spread out all over the place in various build threads. I tried to capture everything I did, if that inspires someone to do something similar, then great.

 

The Thistle Run sounds like fun, I'll bet it takes in some awesome roads....

 

I am having to redesign my air filter box as the current air filter is too wide at is greatest point and will hit against the fwd bulkhead top rail......I have now ordered another air filter which is thinner and an inch shorter, all of which will help in fitting it all into the ever decreasing space envelope......I am hoping to receive the new filter today so I can get it drawn up and a new design done so I can try and get the car back together asap as I am missing some fantastic weather.



#999 cptkirk

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Posted 23 April 2015 - 08:26 AM

Flowmaster DBX Silencer Setup

 

 

 

 

Final welding session last night for the silencer setup, I now have a sweet looking double silencer/ exhaust that should be one hell of a lot more effective (even if a little more restrictive) than the original setup. Don't get me wrong though, when it's not on track I am going back to a single absorption can because its sounds fricking awesome and I've had it reported to em that you hear me coming from behind (finaar finaar)......

 

I am waiting on a couple of parts before I can final fit it but here's a couple of snaps from last night, was double chuffed when I realized it would stand on its own.....

 

It's a shame the old part that I am re-using isn't as shiny as the rest of it but hey ho, you cant have everything.

 

Big thanks to Stevie G for giving up yet another evening for me and the car....

 

 

 

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turns out it does look like the design:

 

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A few more shots:

 

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Edited by cptkirk, 23 April 2015 - 08:27 AM.


#1000 andream88

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Posted 23 April 2015 - 12:15 PM

WOW. Simply wow.

great job as usual Andy!!!

#1001 cptkirk

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Posted 24 April 2015 - 07:21 AM

Flowmaster DBX Silencer Setup

 

Well, I fitted them last night and run it up to temp, then gave it a few blips and I am undecided as to whether its quieter than before?!?!? Before making judgement I am going to wait until I have it out on the road under load. I would have got some video of the blips but it was getting late and I didn't want to p!ss the neighbours off, it has more of a raspy sound to it now. I did get a couple of photo's, not the best but they show how it fits in there.....

 

 

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#1002 cptkirk

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Posted 26 April 2015 - 01:33 PM

AUTOMATIC THROTTLE BLIPPER

 

I made a first pass at the design for the throttle blipper solenoid setup. I am still wanting to explore having the push/pull linkage above the solenoid but need to have a think about it. However before doing this I need to model the brake hose that heads over the solenoid to ensure no clashing, I've got feeling its going to....

 

The M8 fittings are overkill but are driven by the ID of the springs. The springs work in two ways, one they take the jolt out of the soleniod action and two they allow the throttle to be pushed past the resting position of the solenoid as when the throttle blips I don't think it will need to be wide open, time will tell and an amount of adjustment is being built into the system.

 

I made a video that I will post up on you tube of the model working, I will tag it into this post once its done uploading.

 

Here's a couple of renders of the first pass:

 

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Edited by cptkirk, 27 April 2015 - 07:16 AM.


#1003 cptkirk

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Posted 27 April 2015 - 07:16 AM

Throttle blipper video

 


Edited by cptkirk, 27 April 2015 - 11:50 AM.


#1004 KTM kid

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Posted 27 April 2015 - 11:34 AM

Amazing as always Andy. Are you happy with the ceramic coating on the exhausts? as Camco is a few mile from my house Its something I will explore.



#1005 cptkirk

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Posted 27 April 2015 - 11:50 AM

Amazing as always Andy. Are you happy with the ceramic coating on the exhausts? as Camco is a few mile from my house Its something I will explore.

 

I have no other point of reference to compare it to but it seems OK, nothing has flaked off so I am guessing its OK. One thing I would say is that if you're looking to reduce engine bay temps I'd wrap it as well as you can see how hot it gets even with the ceramic coating:

 






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