ausmini :: View topic - Things that were not done to achieve ... 1.19 at Wakefield

127hp @ 6500rpm :lol:

The rockers were not changed from standard pressed steel ones, no fancy big ratio rockers here my friends. No mucking with hybrid rockers to get the ratio up either.

The medium bore LCB was not connected to any exhaust bigger that 1-7/8inch. A cannon muffler was not added to the end of the exhaust, just a normal everyday 2inch muffler.

The cam was not timed other than making the dots on the duplex sprockets line up. No fancy offset keys or vernier adjustable camwheels required.

The chokes in the 45mmWeber were not made any larger than 36mm. No ramtubes.

No electronic distributor, just a points dizzy from a wrecked 78 leyland with new points. I did not even clean it :oops:

(i have to admit we tried to get a pulsar dizzy to work, but i think it has a dud module)

No new spark plugs, just a set of used, but clean Bosch plugs with the correct gap.

No fancy alloy rocker cover, just a plain old steel one (not really a performance part, but it makes it look so like a stock engine, especially with the BMC hot run and electronically tuned sticker still on it!).

Many of the parts of this motor are second hand, but carefully checked and modified as necessary. Some just got a good clean. Some not even that. Hell the distributor still has the wreckers white writing on it.

Where does the 127hp come from then i hear you ask? ( or maybe not :roll:

, but i'll tell you anyway)

1411cc, 10.9:1 compression on 98 octane, RE282 cam and a very special head made by Graham Russell to complement the cam. The spread of torque is fantastic, 100+ftlb from 3000rpm all the way to 7000rpm. Despite my comments about fancy high ratio rockers above, Graham reckons there is significant gains to be made by increasing the ratio to 1.5:1, which i may do in the future.

I am very happy with that.

Graham is very happy with that. Lets all be very happy with that. Russell Engineering is the best.

off to the weekend warrior with it then........

cheers
michael

Author:	mickmini [ Tue May 08, 2007 11:34 pm ]
Post subject:	Things that were not done to achieve ... 1.19 at Wakefield
127hp @ 6500rpm The rockers were not changed from standard pressed steel ones, no fancy big ratio rockers here my friends. No mucking with hybrid rockers to get the ratio up either. The medium bore LCB was not connected to any exhaust bigger that 1-7/8inch. A cannon muffler was not added to the end of the exhaust, just a normal everyday 2inch muffler. The cam was not timed other than making the dots on the duplex sprockets line up. No fancy offset keys or vernier adjustable camwheels required. The chokes in the 45mmWeber were not made any larger than 36mm. No ramtubes. No electronic distributor, just a points dizzy from a wrecked 78 leyland with new points. I did not even clean it (i have to admit we tried to get a pulsar dizzy to work, but i think it has a dud module) No new spark plugs, just a set of used, but clean Bosch plugs with the correct gap. No fancy alloy rocker cover, just a plain old steel one (not really a performance part, but it makes it look so like a stock engine, especially with the BMC hot run and electronically tuned sticker still on it!). Many of the parts of this motor are second hand, but carefully checked and modified as necessary. Some just got a good clean. Some not even that. Hell the distributor still has the wreckers white writing on it. Where does the 127hp come from then i hear you ask? ( or maybe not , but i'll tell you anyway) 1411cc, 10.9:1 compression on 98 octane, RE282 cam and a very special head made by Graham Russell to complement the cam. The spread of torque is fantastic, 100+ftlb from 3000rpm all the way to 7000rpm. Despite my comments about fancy high ratio rockers above, Graham reckons there is significant gains to be made by increasing the ratio to 1.5:1, which i may do in the future. I am very happy with that. Graham is very happy with that. Lets all be very happy with that. Russell Engineering is the best. off to the weekend warrior with it then........ cheers michael

Author:	drmini in aust [ Wed May 09, 2007 6:43 am ]
Post subject:
Man, all I can say is that in a big motor, this cam is fantastic. One it cuts in (2900 rpm on my 1360 with 1.5 rockers) it leave the RE13 in its wake, all the way to my 7500 redline. Yes I had an RE13 in it before.

Author:	dove grey 64 [ Wed May 09, 2007 8:36 am ]
Post subject:
im glad you put up this post, my engine builder has told me a similar thing, most of the best things to have are stock factory parts. my build will be similar. congrats on the good result mate

Author:	willy [ Wed May 09, 2007 8:46 am ]
Post subject:
Going to make a nice road car

Author:	Lillee [ Wed May 09, 2007 12:55 pm ]
Post subject:
Sounds good mike, well done. That 282 is something hey?

ausmini https://www.ausmini.com/forums/

Things that were not done to achieve ... 1.19 at Wakefield https://www.ausmini.com/forums/viewtopic.php?f=5&t=31567	Page 1 of 4

Author:	Timbo [ Wed May 09, 2007 1:55 pm ]
Post subject:
Jeez, just imagine how powerful it could have been, if you'd done everything! Surely you have at least used carbon fibre pushrods? Tim

Author:	cush [ Wed May 09, 2007 2:02 pm ]
Post subject:	Re: Things that were not done to achieve ... 127hp
mickmini wrote: 127hp @ 6500rpm The rockers were not changed from standard pressed steel ones, no fancy big ratio rockers here my friends. No mucking with hybrid rockers to get the ratio up either. The medium bore LCB was not connected to any exhaust bigger that 1-7/8inch. A cannon muffler was not added to the end of the exhaust, just a normal everyday 2inch muffler. The cam was not timed other than making the dots on the duplex sprockets line up. No fancy offset keys or vernier adjustable camwheels required. The chokes in the 45mmWeber were not made any larger than 36mm. No ramtubes. No electronic distributor, just a points dizzy from a wrecked 78 leyland with new points. I did not even clean it (i have to admit we tried to get a pulsar dizzy to work, but i think it has a dud module) No new spark plugs, just a set of used, but clean Bosch plugs with the correct gap. No fancy alloy rocker cover, just a plain old steel one (not really a performance part, but it makes it look so like a stock engine, especially with the BMC hot run and electronically tuned sticker still on it!). Many of the parts of this motor are second hand, but carefully checked and modified as necessary. Some just got a good clean. Some not even that. Hell the distributor still has the wreckers white writing on it. Where does the 127hp come from then i hear you ask? ( or maybe not , but i'll tell you anyway) 1411cc, 10.9:1 compression on 98 octane, RE282 cam and a very special head made by Graham Russell to complement the cam. The spread of torque is fantastic, 100+ftlb from 3000rpm all the way to 7000rpm. Despite my comments about fancy high ratio rockers above, Graham reckons there is significant gains to be made by increasing the ratio to 1.5:1, which i may do in the future. I am very happy with that. Graham is very happy with that. Lets all be very happy with that. Russell Engineering is the best. off to the weekend warrior with it then........ cheers michael what leads did you use?

Author:	mickmini [ Thu May 10, 2007 5:17 pm ]
Post subject:
Leads, Cush you are a crack up yep all that power was made by my special secret stash of magic leads - nothing special there either i'm afraid, just a set of top guns that i used for maybe 3-4 weeks about a year ago. no they were not breaking up like Kev says they do when they are old. Graham was apparently concerned that some of you may be mislead when i wrote 100+ftlb (thanks for dobbing me in Peter ). This means always more than 100ftlb of torque over a wide band, meaning very flexible, not peaky. If you must know the peak was 113ftlb, so there was almost 90% of peak torque available across a 4000 rpm band. i'll plot the curves from the dyno test sheets later. The rev limit on this motor will be 7000rpm, so it is not a really high revving race motor. Note that this is mainly limited by the crank material and stroke. I am very happy with that limit, it will enable me to learn how to drive the car cheers michael

Author:	mickmini [ Thu May 10, 2007 5:19 pm ]
Post subject:
the following were new bearings - ACL mains & camshaft, King big end as the ACLs were not available for that. Pistons - Hypatec 73mm, RE ones were not available at the time i got these, and they were being sold a stupidly low price oil pump - modified with a hole drilled to lubricate the back of the impellor to ensure long life cam followers - "isky type" thick wall rocker shaft - the larger lift cam could put high loads on the rocker shaft at the higher rpm, better safe than sorry double valve springs - good to 8000rpm (but will never get that high by design) inlet valves - needed bigger ones than standard k-lines in the valve guides - minimises the clearance required to the valve stems, minimises oil burn. gaskets and seals - obviously including seals on the inlet valve stems as a precaution. maniflow LCB - medium bore ARP rod bolts and head studs oh and the gearbox was rebuilt, and flywheel lightened (not excessively) but for the engine dyno, the flywheel is not fitted, and the gearbox just holds the oil.

Author:	mickmini [ Thu May 10, 2007 5:23 pm ]
Post subject:
all the second hand gear for 1970 mini K large journal crank - cleaned, offset ground, wedged (for reliability) block - main bearing caps line bored, cylinders bored and honed, decked main bearing cap bolts - ends ground to ensure they don't bottom out camshaft - ground by GR to RE282 conrods - AEG521 old rusty bolts removed and discarded, cleaned rods head - ported, new valve seats cut, skimmed & cc'd exhaust valves - cleaned and seats recut valve caps and collets - cleaned rockers - cleaned and the top welded to ensure that the pads don't fall out! 3.5 inch inlet manifold (banned brand ) - cleaned 45DCOE weber - cleaned and kitted, new 4.5 aux venturis 1275LS harmonic balancer - rebuilt distributor - new points top gun leads bosch W8DC plugs - cleaned pushrods - gave em a wipe. duplex sprockets and chain - technically second hand.

Author:	drmini in aust [ Thu May 10, 2007 7:16 pm ]
Post subject:
I hope your S rod bolts last, I have seen a few S/H ones go BANG!. Now I always fit new, unless I know when they were replaced. I use ARP or HPX ones for a 426 big block Ford, these are both less than 1/2 the current cost of ARP's Cooper S ones.

Author:	pristic [ Thu May 10, 2007 7:55 pm ]
Post subject:	Re: Things that were not done to achieve ... 127hp
mickmini wrote: 127hp @ 6500rpm Un-friggin-believable... but I saw it in the dyno room and it looks so... so sedate Quote: I am very happy with that. Graham is very happy with that. Lets all be very happy with that. Russell Engineering is the best. You can say that again... absolutely brilliant. And congrats by the way, it'll be a blast. Whats the plan for this motor? What you going to run it in? Peter.

Author:	mickmini [ Thu May 10, 2007 8:03 pm ]
Post subject:
drmini in aust wrote: I hope your S rod bolts last, I have seen a few S/H ones go BANG!. Now I always fit new, unless I know when they were replaced. I use ARP or HPX ones for a 426 big block Ford, these are both less than 1/2 the current cost of ARP's Cooper S ones. sorry Kev, my bad. I cleaned the rods, not the bolts. new ARP rod bolts and head studs. cheers michael

Author:	drmini in aust [ Thu May 10, 2007 8:11 pm ]
Post subject:
Sorry, didn't see the bolts and nuts in 1st list. Hint.. don't do what some people have done lately, dynoing big HP there, then letting dizzy get moved... See what the max advance timing is, and put some marks on front pulley and cover if not already.

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Author:	mickmini [ Thu May 10, 2007 8:12 pm ]
Post subject:	Re: Things that were not done to achieve ... 127hp
pristic wrote: Whats the plan for this motor? What you going to run it in? Peter. its going in my weekend warrior - the 66 morris mini minor. i will use it for track days, supersprints, khanacross (Graham reckons way too much power for that) and motorkhanas (ditto). i am just about finished the installation of the bolt in roll cage, will go and do that now. need to install the engine, fuel pump, hydraulic handbrake and give it all a lick of paint. but the paint can wait till i have used it a couple of times and no this car will not be registered. unless i take it to the Netherlands with me and register it there - did i hear you say Nordschleiffe? cheers michael