27 replies to this topic

[1275john]

Hi all me and my dad are putting together an engine for his 1971 mini so far we have the following.

1293 21253 pistons
Kent camshaft (mega dyne 286)
Duplex timing chain
High capacity turbo oil pump
Re ground crank with new shells and mains ect


Now that's about as far as the budget goes for the mo ,he's hoping for around 70-80 hp .
Now with the pot running dry what head would you all recommend and is there any other block mods you can suggest that I might of missed ?

Gearbox wise it already has a 4 pin diff just going to add a centre oil pick up.


Thanks all.

[Twisty]

i would ditch the 286 cam as that will make the car a real pig to drive and real lumpy as its a rally style cam and all the power will be at the top end of the rev range. a 266 is what i would suggest for road use its a good fast road cam the 276 is still quite lumpy and you will have to rev it up to get it to go anywhere.

What head are you using with all this?

[racingbob]

wont you need to balance the engine with a 286 in

and a good head for cam to work probably £500

and full maniflow system

you dont need a 286 if you want to achieve 70 -80 hp

my engine would have that its mg metro engine

mg metro head with modded inlets, full stage 2 maniflow, mg cam ( 266 )

balanced engine, Kn filter

[Twisty]

have a read through this topic that was posted yesterday for comments and info on a 276 cam and lightened flywheel it may help.

http://www.theminifo...r-daily-driver/

286 cam is going to be to much for the road mate sell it on ebay and get a more mild cam.

Cheers


Steve

also i just found this in the faq section with all the tech on different cams http://mini-mayfair....5/camshafts.xls

Edited by Twisty, 11 May 2012 - 08:42 AM.

[Beej123]

We are taking a customers 1293 for its RR today. We don't know which can it has as the owner doesn't know but we think it's 276 and it's quite lumpy. If the owner doesn't mind I'll report back later with figures.

It has larger inlet and exhaust valves but no head porting work. Stage 1 kit including 1.75" exhaust.

I'm expecting around 65-70bhp and would expect about 10-15 more if it had a good head to match the cam!

[1275john]

Cool il await the results

[Beej123]

Right then, results.

Went in and hit 40BHP, Mick had a play about and changed the carb needle and we drove out with 74BHP!


I'm pretty chuffed with that and so is the customer, drove brilliantly after the tuning.

Edit: Mick thinks its an MG Metro cam not a 276

Edited by Beej123, 11 May 2012 - 08:07 PM.

[adam davies]

Like Twisty said we had a bit of a discusiion on my topic yesterday about cams and I've got a 276 in mky engine at the moment. I've got a stage 2 head built by MED waiting to go on. If I build the engine up and get it in the car before you've got a head, I'll let you know how the cars performs

[oltonlad]

Right then, results.

Went in and hit 40BHP, Mick had a play about and changed the carb needle and we drove out with 74BHP!


I'm pretty chuffed with that and so is the customer, drove brilliantly after the tuning.

Edit: Mick thinks its an MG Metro cam not a 276

thats not bad at all, its about the same as a stock MG lump in good order, can you remember what the torque figure was?

Edited by oltonlad, 11 May 2012 - 08:51 PM.

[MrBounce]

My old set up was a +30 1275 (think that makes it 1301?) with a 266, twin 1 1/4" SUs and an MED Road/Comp head. The crank & flywheel were standard, as were the rockers. That kicked out 79BHP at the fly with similar torque on MiniSpeed's rollers. Lovely engine.

Edited by MrBounce, 11 May 2012 - 08:52 PM.

[Beej123]

Right then, results.

Went in and hit 40BHP, Mick had a play about and changed the carb needle and we drove out with 74BHP!


I'm pretty chuffed with that and so is the customer, drove brilliantly after the tuning.

Edit: Mick thinks its an MG Metro cam not a 276

thats not bad at all, its about the same as a stock MG lump in good order, can you remember what the torque figure was?

I don't remember, I'll check tomorrow and get back to you on that one, it's been a busy day.



The one thing Mick did say about it is that it didn't want to rev over 5500, with a good solid rebuild and some head work it could be a bloody good engine!

[oltonlad]

Right then, results.

Went in and hit 40BHP, Mick had a play about and changed the carb needle and we drove out with 74BHP!


I'm pretty chuffed with that and so is the customer, drove brilliantly after the tuning.

Edit: Mick thinks its an MG Metro cam not a 276

thats not bad at all, its about the same as a stock MG lump in good order, can you remember what the torque figure was?

I don't remember, I'll check tomorrow and get back to you on that one, it's been a busy day.



The one thing Mick did say about it is that it didn't want to rev over 5500, with a good solid rebuild and some head work it could be a bloody good engine!

how much did mick charge for the tune up?........the mini special is going there on tuesday, he wont have any problems revving the engine in our car.....it revs past 6000rpm in 4th..........lol

[Turbo Nick]

Hi all me and my dad are putting together an engine for his 1971 mini so far we have the following.

1293 21253 pistons
Kent camshaft (mega dyne 286)
Duplex timing chain
High capacity turbo oil pump
Re ground crank with new shells and mains ect


Now that's about as far as the budget goes for the mo ,he's hoping for around 70-80 hp .
Now with the pot running dry what head would you all recommend and is there any other block mods you can suggest that I might of missed ?

Gearbox wise it already has a 4 pin diff just going to add a centre oil pick up.


Thanks all.

sounds like it'd be a decent fast road engine, only thing i'd change is to stick with a normal oil pump rather than a turbo one. no point pumping round more than you need and wasting money on something overkill. Pretty sure i've still got a std pump in mine at the minute.

[Beej123]

Right then, results.

Went in and hit 40BHP, Mick had a play about and changed the carb needle and we drove out with 74BHP!


I'm pretty chuffed with that and so is the customer, drove brilliantly after the tuning.

Edit: Mick thinks its an MG Metro cam not a 276

thats not bad at all, its about the same as a stock MG lump in good order, can you remember what the torque figure was?

I don't remember, I'll check tomorrow and get back to you on that one, it's been a busy day.



The one thing Mick did say about it is that it didn't want to rev over 5500, with a good solid rebuild and some head work it could be a bloody good engine!

how much did mick charge for the tune up?........the mini special is going there on tuesday, he wont have any problems revving the engine in our car.....it revs past 6000rpm in 4th..........lol

I've PMd you mate

[oltonlad]

i had a 286 cam in my old 1340...........never again, it was worse than useless in traffic!!