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I am going to build a turbo manifold from butt weld fittings (1 1/2" NB SCHD 10) I can get 321 fittings in normal or high carbon (which the specs say is for greater strength). However 304L is recommended over 304 for lower temperature applications where the low carbon content is benifical. So...

Interesting Artsi that you quote Fredrik Westin as I have spoken to him (I judged his car at Formula student and a year later he was in my judging team)about twin turbos. He said that 2 small turbos were the way to go for general all round use. He was talking about having one turbo on 2 ports...

This Vizard article will tell you (and a lot more) http://www.geocities.com/motorcity/track/6992/vizard.html In brief....What is important is the volume of the silencer and if it acts as an expansion chamber. If this is the case, near the engine can have benefits. If you have an expansion...

Hello, I am new to FEA and I am using a package ( http://cuylaerts.net/ ) to analyse a spaceframe chassis I built ( Morris Minor www.beardmorebros.co.uk ) I require some help with the cross sectional details of the material. The program asks for the following:- (I am using the metric units)...

I have built a one off exhaust system and the sections of pipe and manifold are joined with bolt together flanges. I would like suggestions as to how to seal these flanges. My thoughts are for a silicon sealer, gasket sealer or a gasket material. Pictures of my application can be viewed...

Rider6698, Thanks for the website link. It is just what I was looking for. John

I am trying to source TK7 fuel additive here in the UK. All my websearchs and communication with the manufactures have come to nothing. Emails are returned, address unknown. Does anybody know if TK7 is still available and being manufactured? Thank you, John

Does anybody know if this magazine is still going? Their website is not available. Does anybody have any articles from the magazine, specifically the one by David Vizard on TK7 fuel additive? Thanks John

Anything by Carroll Smith. If I have nothing to read then I will pick up one of his books and be educated and amused at the same time. John

My car is short wheel base and will be used on tight twisty courses so I require a good turn in. I understand that an open diff will give better turn in than a partially locked or locked diff. This therefore points towards a torque biasing diff or a plate diff with 85 degree ramps on the coast...

The Jack Knight is a cam and pawl which seems to be a very good diff, but it wears quite quickly and therefore requires rebuilds. I help run a hill climb / sprint Mini here in the UK and we use a Jack Knight cam and pawl but it probably only runs for about 1 hour a year. It replaces a Quaiffe...

The Quaiffe seems perfect except for one aspect and that is if one wheel is in the air or totally looses traction then all the drive goes to that wheel, not ideal. How did you find the Detroit locker? Carroll Smith in Drive To Win does not rate them. John

I require advice on selecting a limited slip diff for my car. The vehicle will be used as tarmac rally car, hill climb (twisty, bumpy, tarmac) and on the road in all weather conditions. I wish to fit the unit and forget it. It must be low maintenance and reliable. The differential unit I am...

Thankyou for the information. John

I have a lot of intricate steel parts which I wish to plate and powder coat, but they have a light coating of rust. In the past I have sand blasted, but recently I have seen advertised powders that are disolved in water and you immerse the steel parts and it cleans the rust off. Internet...

Computer programs exist to work out all the design aspects of shafts (joint orientation, tube size etc) Contact your prop shaft maker. The company I used to work for used Dana Spicers computers. We once made and supplied shafts for fire engine pumps and the sytem consisted of 6 shafts all at...

Progressive Racing, Cadastrophe is refering to drive shafts as in the ones from the differential to the wheel hubs. 4130 would be suitable for what we Brits call a propshaft (gearbox to axle) John

My reference (Carroll Smith Engineer To Win) recommends 4340 for drive shafts. He does NOT recommend 4130. This is due to poor deep heat treatment and its dislike of varying cross sections. John

I am looking for details on the design of an IP66 sealed wiring harness for a race car that I am building. I intend to use Raychem adhesive lined breakouts and `Y` splits. I would like to see pictures of a harness, construction methods, etc. Any web links would be most welcome as I have drawn...

My collector is actually inside my tank. There are 2 low pressure pumps feeding this and when the collector is full it will over flow into the main body of the tank. The high pressure pump is mounted in the collector. I intend to insulate the hoses and fuel rail in the engine bay. My hose...