howardsmed

David Newman doesn't run the company anymore, he has left that to his son Ken. if you call mention me, they know me well I will put...

we copied the 25-130 profile and reduced the duration, and the program at Newman's "computer smoothed" the profile as well as...

I went to see John Andrews years ago at Andrews cams in the USA, he was particular about what machinery he used and he had Landis. Ken...

I have used SP370 pistons,( 85mm) i built a bike for martin Guilford, who was a professional sidecar moto-crosser, ( his father Mike...

I am not angry, sorry if it sounded so, email can be misconstrued easily, i am very grateful for your advice, i have seen your work, and...

Yes. the pin bores do wear on the XS650, but in the hundreds of XS engines i have seen, it is VERY rare. The XS1 I have, sat for a long...

Our XS880 has 92hp rear wheel hp, ( from TTS one of the most reputable performance shops in the UK) when someone shows me an XS650/880...

Hi Christian I worked for Carl Morrow in Sana Fe springs tuning Harleys in 1994, Megacycle were in CA too, so no bother, but now, with...

Hi Christian SR500---the 41mm is the OD, all tubing in the UK is measured on OD, so yes the internal diameter will be the same size as...

Yes they are flat topped, which means its easy to set the deck height, and thus the squish clearance, we will have to get some 83.5mm...

it wont be a cheap day out if you do the stroker crank too, that is a lot of engineering work, However the 800cc big bore will be a bare...

I had a long chat with Rick 10 minutes ago, we will do the stroker crank first ( people have been using 84mm strokers for 40 years, so...

Just thought his snippet of info should be out there. This is for UK and European engines only, which have 533 con rod length ( 140mm...

half a lifetime ago i worked for a HD tuning shop here in the UK, i had a set of Branch heads on my 80, and then STD modified bathtubs...

The XV valves we have used a fair bit, they are +2mm oversize, which means that the seat ID ( the seat choke point) will be 89/90% of...

I am not a fan off slagging people off, BUT Lenny Paterson from the cylinder head shop is not a nice man, he is full of chat, but in the...

You must be joking, Lenny Paterson of the Cylinder Head Shop is a crook, who talks rubbish ( see his website, bigging himself up) with...

its a race engine, built for Steve Mann, BUT it did pull a sidecar and two people, and started and ticked over well, it is really just a...

water jet cutting is excellent i have had hundreds of parts done, in titanium, lithium, stainless steel, copper etc strangely the only...

i have asked Steve for the dyno sheet on the race 750 we did with 76hp, i will post it if he can find it. The 880 was a real surprise...

Hi Dan i have just done a raised port inlet and exhaust on an SR500, the port is +6mm higher, which straightens the port pout no end. i...

I found this dyno sheet when i was tidying up the external hard drive the engine is one i built for Steve Mann CRMC sidecar racer, this...