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Posts: 11
| https://www.youtube.com/watch?v=Sic3Vu_Kypg |
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Expert
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Location: Jelling, Denmark | very nice metro. sounds nice and looks very quick. A-Series yes?
any pictures and a detailed description, especially of the engine?  |
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New user
Posts: 11
| Still the good old A series.
1293. Cc with a supercharger. And a 7 port head. On Jenveys tbs and dta.
All built by migliacars.
Car is restricted to 7800rpm and does 167 at the wheels. A bout 210 at the fly.
She weighs in at 700 kg.
Edited by migliacars 21/1/2016 7:01 AM
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New user
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Expert
Posts: 4458
Location: Jelling, Denmark | migliacars - 21/1/2016 8:02 AM
Photo
doesn't work unfortunately |
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Expert
Posts: 4458
Location: Jelling, Denmark | migliacars - 21/1/2016 7:57 AM
Still the good old A series.
1293. Cc with a supercharger. And a 7 port head. On Jenveys tbs and dta.
All built by migliacars.
Car is restricted to 7800rpm and does 167 at the wheels. A bout 210 at the fly.
She weighs in at 700 kg.
very nice bhp. you follow the newer and bigger cars nicely.
yes I can hear in the videos that you have a rev limiter which you hit some times
so internally is the engine something like: steel crank, lightened and balanced rotating parts, H-beam conrods, forget pistons, heavily flowed big-valve head? something like a 300 degree cam? lsd?
how did you get it down to 700kg? my racer is still 780kg. |
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New user
Posts: 11
| https://www.youtube.com/watch?v=kJ0IY8yf0Z8
this is before we owned it, there is was 1380cc n/a
https://www.youtube.com/watch?v=AiI5k6d01lg
this is her with me driving it with the 1380cc n/a
the car came to us in 2004, pretty much as it is now chassis wise in fact i think we made it a tad heavier.
the head is a 7 port which we ported to suit the boosted engine we built.
as for the spec yes there is a dogbox and a lsd in there, as for the engine its not heavyly modded there is no crank better than a standard unit again were worked it to suit what we needed.
the only thing that is a must is a set of arrow rods.
The idea was to build a fast powerful low reving engine that would do a season with no hassle.
as we have had such success with this unit im going to do a big power version.
oh the metro is a real giant killer its always there with the fast lads right at the front, Its great to see people in amazement when they see the A series in there. |
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Expert
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Location: Jelling, Denmark | migliacars - 21/1/2016 5:02 PM
https://www.youtube.com/watch?v=kJ0IY8yf0Z8
this is before we owned it, there is was 1380cc n/a
https://www.youtube.com/watch?v=AiI5k6d01lg
this is her with me driving it with the 1380cc n/a
the car came to us in 2004, pretty much as it is now chassis wise in fact i think we made it a tad heavier.
the head is a 7 port which we ported to suit the boosted engine we built.
as for the spec yes there is a dogbox and a lsd in there, as for the engine its not heavyly modded there is no crank better than a standard unit again were worked it to suit what we needed.
the only thing that is a must is a set of arrow rods.
The idea was to build a fast powerful low reving engine that would do a season with no hassle.
as we have had such success with this unit im going to do a big power version.
oh the metro is a real giant killer its always there with the fast lads right at the front, Its great to see people in amazement when they see the A series in there.
I think I have seen that car in pictures before, at least one with the same carb/airfilter setup.
if 210 crank bhp isn't big power it will be interesting to see what is big power to you 
I raced in hill climbing several seasons (with half the power of you) with the standard crank aswell and yes it works really well but then again it is a steel crank unlike the old mini ones. mine finally had to be changed due to to large tolerances on the trust washers +30 to much unfortunately. other than that it was good. now I am using a turbo crank.
yes the arrow rods looks really nice, but if you smoothen and polish the standard rods how much power do you think they will take?
I can easily understand that its a giant killer, with that power to weight ratio its in escort bda/bdg territory and they are really really quick cars. |
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New user
Posts: 11
| Cranks???
I will only use the cranks at plus .10 after that ill sell them on, just in case.
when u say the old mini cranks which ones do u mean!!!
All 1275 and 998 used the same forging process they are an excellent steel. when u say turbo crank what do u mean!!!
all the metro turbo cranks ive seen have been the same as the mg metro cranks, there is some rumours that the very very early mk1 turbo cranks were different but ive never seen one in the flesh or on a photo!!!! if you have a photo that would be nice to see.
big power !!!! i think well pretty sure that i can do 200 at the wheels,
the engine at press has the wrong cam in it very restrictive so a big cam will be looked at and ground to the specs we shall require, also bigger injectors will help at the top end, and more boost, its just if the engine can take it for 20 mins at a time!!!
rods. not sure what they can take tbh, i had a set modified by a certain self proclaimed A series expert in a full race 5 port so power wasnt big, it lasted 2 mins on a test day at cadwell park before 1t let go and took out my whole engine.... this was well before we started building our own units!!!
so for the sake of £800 i just buy the best....
weight
the metro uses carbon fiber doors and boot fiberglass bonnet and wings with a special detectable front end/bumper/splitter |
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Expert
Posts: 4458
Location: Jelling, Denmark | here are some pictures of the two metro cranks I have been using.
normal metro crank (CAM6232):
early turbo crank (CAM6581):
regarding old cranks I am talking about some of the mini cranks from before metros. everyone I talk to, people who race minis and the guys that reground cranks for me tells me that the CAM6232 crank is of much better steel and lasts longer than the old mini cranks, although it have to be said that I haven't tried racing with the old mini cranks. |
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Expert
Posts: 4458
Location: Jelling, Denmark | migliacars - 22/1/2016 9:40 AM
big power !!!! i think well pretty sure that i can do 200 at the wheels,
the engine at press has the wrong cam in it very restrictive so a big cam will be looked at and ground to the specs we shall require, also bigger injectors will help at the top end, and more boost, its just if the engine can take it for 20 mins at a time!!!
rods. not sure what they can take tbh, i had a set modified by a certain self proclaimed A series expert in a full race 5 port so power wasnt big, it lasted 2 mins on a test day at cadwell park before 1t let go and took out my whole engine.... this was well before we started building our own units!!!
so for the sake of £800 i just buy the best....
weight
the metro uses carbon fiber doors and boot fiberglass bonnet and wings with a special detectable front end/bumper/splitter
200 at the wheels certainly is big power will be interesting to see when you have it build
maybe one of your rods in that engine was bad. but yes for ease of mind when doing a big power a-series the arrow rods are nice. alternatively you could get some rods crack tested to be sure that you had 4 good rods.
carbon and fibreglass will help on the weight I'm not allowed to use that as its supposed to be a historically correct series I race in. |
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New user
Posts: 11
| 200 at the wheels certainly is big power will be interesting to see when you have it build
it certainly will fingers crossed.
maybe one of your rods in that engine was bad. but yes for ease of mind when doing a big power a-series the arrow rods are nice. alternatively you could get some rods crack tested to be sure that you had 4 good rods.
maybe but i tent to think it was the butchers who them> and again for peace of mind and ease arrow all the way for me. |
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Elite Veteran
Posts: 664
Location: Herts | Be nice to see some pics of this, can you upload them to photobucket or similar? |
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New user
Posts: 11
| try again |
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New user
Posts: 11
| try again cannot add pics here for some reason |
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Extreme Veteran
Posts: 586
Location: brighouse just shy huddersfield | You will have to sign up to photobucket and copy the Img code and paste it here as I too wanna see some pics of this ? |
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drive it like its hired
| Thats impressive!
Nice engine and driving |
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Regular
Posts: 196
Location: Beds | if you smoothen and polish the standard rods how much power do you think they will take?
In my old A series car I used Metro A+ rods (EN15 steel rather than the EN16 of earlier A series and 19 of Cooper S) which had been smoothed and nitrocarburised, or carbonitrided, or whatever the process is called. Nick Swift commented that they would probably have been as good as any of the after market options.
I was seeing 100hp per liter out of a normally aspirated 1380
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Expert
Posts: 4458
Location: Jelling, Denmark | 1380racer - 26/1/2016 3:17 PM
if you smoothen and polish the standard rods how much power do you think they will take? In my old A series car I used Metro A+ rods (EN15 steel rather than the EN16 of earlier A series and 19 of Cooper S ) which had been smoothed and nitrocarburised, or carbonitrided, or whatever the process is called. Nick Swift commented that they would probably have been as good as any of the after market options. I was seeing 100hp per liter out of a normally aspirated 1380
thank you for the explanation.
I realize that en16 steel is commonly used for engine parts in standard A-series engines, and that en24 is often used in very expensive aftermarked crankshafts and such things, and then I suppose en19 is stength-wise somewhere in between the two. but I do not know how good en15 is compared to the other steels. but looking at the casting/design of e.g. a set of mg1300 rods and a set of metro rods (both 998 or 1275) the metro rods looks to be stronger by design around the conrod bearing cap.
where did you get them nitrocarburised (or what ever its called)? just some machine shop? |
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Regular
Posts: 196
Location: Beds | The A+ rods were redesigned to cut down the weight, especially the bosses on the big end cap and the lumps on the sides of the little end. I think the slight 'webs' on the big end were introduced then as well. That combined with the larger journal size allowed the reduction in steel spec without affecting life.
Mind you the factory test for endurance was something like 100 hours at full throttle! 100hrs x 6000rpm = 36 million cycles at max load
These days EN24 is renamed as 4340 which seems to be the pretty universal material for forged rods, cranks etc
The heat treatment on mine was done by a company that did such stuff on an industrial scale. A friend worked there and got them put through as samples for no cost! Sadly the firm has long since gone
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mcs metro in action 2015 cadwell park
