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The Oily Bits S1 Specific Topics
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[image]http://www.richweb.f9.co.uk/astro/images/base1.jpg[/image]

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Dave and all,the engine I have is scholar 1800 block,DVA big valve head,1227 cams,original bodies,Emerald ECU mapped by Dave Walker,omega pistons,arrow rods and steel crank,EBD manifold and i think backbox(no cat).Its done around 5 races prior to me ,and around 6 in my hands with no problems.The BHP graph I have is,as everything else I have quoted down to the history which came with the car which I do not doubt to be true.The engine was not balanced and is a bit lumpy` but I quite like that! yes it uses oil a bit but so what.True facts for us all(as far as I know them)

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Thanks for the info Jonny, but I still dont know who the head was done for and I dont recall the spec. AFAIK the lowest figure I have had for an engine of that spec. was 215BHP and that was with a measured leakdown and on a stock exhaust manifold.

Dave

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Dave,
Mark Donald was the chap I bought it from,he had been racing in the AMOC mid-engined series.The car was run through Plans.Titanium,with green stripes(!) looks good actually!

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According to my records it is a VHPD head with 1227 cams on big inlet valves and Colsibro guides. I did the head but had nothing to do with the installation or cam timing. If the pistons have not had the inlet pocket sizes increased in width there is a very good chance that the inlet valves have kissed the pistons and are leaking. The pockets in Omega pistons are only just sufficient for stock valve sizes.

In view of the output it’s worth checking that out, I have had two heads which have suffered in this way despite advise to the owners to increase the pocket size. One of them went from 201 to 245BHP when this was corrected

Dave

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Dave,
that could explain the low power to spec.I konow you didn`t build the engine or install.If you had I guess it could have been better…over 200 BHP would be sweet! BTW I get 148ILb is that on par with the BHP?
Jonny

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Uldis,

Where have I said it is OK to change the clutch and not rebalance the engine? Often it is simply the friction plate that is changed, its pointless balancing that.

I knew you’d say that. It was just an example and in no way I’m implying you did that.


And also where have I said that what I do is mistake free? If I make an error I acknowledge it and attempt to put it right, to say otherwise is incorrect and you should not be posting to the contrary unless you know for a fact that I have never acknowleged a mistake.

From what I see here, all the replies to Simon, it seems your work is perfect. And I just don’t believe it.


Of course it is possible to get too hung up on balancing, as far as I am concerned it is a service perfomed by an expert, provided the service is known to be good and you use it there is no need to go further in that direction unless your interest lies there. As already demonstrated I do send engine sets for balancing to Steve and I always recommend him, but due to customer preferences and sometimes price not all engine sets go there.

If somebody that has less precise machinery balances it, it’s not going to be as good.
If it’s as precise, yes, by all means.



This really is old ground and I cannot fathom what point you are trying to make, but most of your statements run contrary to information already supplied and published on this BBS.

I could be wrong but I suspect that you are currently allowing Simon’s postings to be made by proxy.

Dave

I really don’t understand this last bit.



But, I’m getting drawn again into the discussion.
I leave it up to you guys.

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Pesky… what the heck is that ?

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Pesky… what the heck is that ?

Looks like someone is digging a big hole to me

But they’ve gone for a beer!

Edited thanks to Steve J

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Looks like a hole someone dug for themselves

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“One of them went from 201 to 245BHP when this was corrected”

just out of interest - whos engine was this please ?

Ta
wonk

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Wonkycustard,

I am happy to let you know once I have spoken with him, and when I know who you are, the prospect of him receiving a long ranting phonecall from a certain party would not go down too well. It wouldn’t be the first time that I have seen dirty tricks on a BBS.

Jonny,

148lb/ft seems a bit low, I would normally expect to see in the mid to high 150s, 160+ on an exceptional one, but it also depends on manifolding and trumpet length which can have a profound affect on torque delivery. It would seem to be around 7% low but that is just a wet finger in the air since I know little of the other details and I havent seen the shape of the curves.

Dave

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Uldis,

Having had a conversation with Steve at Vibration Free this morning (he is an acknowledged expert on balancing), he agrees that Simon is too hung up about balancing. That is not to say that balancing is not a very important aspect of engine preparation which I am happy to concede is absolutely true. It is not a universal panacea which will turn a bad engine into a good one though.

I would thoroughly recommend Steve’s services to anyone contemplating a ground up build. In my opinion he provides a first class if not unrivalled service.

Dave

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Not wishing to flog a dead horse… but… I have just spoken with a customer who reminded me after reading this thread that I had his engine balanced at Vibration Free in August of last year. There are probably others but I always give the receipts and balancing stats to the customers involved.

Dave

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Hi there, back to post but won’t have much time over the next few weeks.

Have read all the latest and it appears you’re doing well.
Don’t know why Simon hasn’t replied, since I know he’s got more details, he should post them (although in a constructive manner).

As I said before, being one of the few that want to keep the K, I’d like a perfect world with perfect builds, may I ask, even a choice of builders?.

If I was going for power only, I’d be getting a TVR

Or, actually, one of these:

With the 6.1L Hemi

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Don’t know why Simon hasn’t replied, since I know he’s got more details, he should post them (although in a constructive manner).

Maybe there is only so much humiliation he can take, he has a fairly tenous grasp on reality as it is but even he must now realise what a fool he has made of himself.

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dave and all,
I have looked at the history of my engine,as you say the head was done by your goodself to what seems top spec. the block was a scholar 1800 and as far as i can see the engine was built up by Scholar.Would they have pocketed the pistons as normal practice for the spec. of the head do you think? I quite understand if you would rather not comment ,just wanted to hear any views as to why my engine makes low power to spec. compared to the lowest you have seen of 215 bhp…I dont understand…20 bhp different? if you need any more spec. please ask.As I have said I only know what I can gain what I know from the history,but its a bloody good engine,and has run without a single fault,just seems down on power,
Jonny

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Knowing Scholar as I do, I doubt that they would get something this obvious wrong since they have built many engines. However nothing is impossible. It is certainly worth checking for leakdown and also checking the cam timing.

Dave

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Dave,
i`ll check that out as you suggest,thanks
Jonny

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Whats up,are some people just waiting for Simon to to post so you can try and rip him up like a pack of hounds!? Simon has kept the best posts running to everybodies interest.He`s a very intelligent man and extremely passionate about the K series(as is Dave Andrews ) I just feel slanging and threats are not what should be on here as i have told simon.
Jonny walker