what size exhaust tube/elbow etc for my setup?

[turbomike]

Originally Posted by CNHSS1

mines the highest sprinter at a modest 250, but Pete silcocks road and trackday Sabre is knocking on the door of 300+ with his VNT protoype turbo and a DET. Stew B is building a killer DET with big turbo (for a scim anyway) and is looking for 350+.
One of the old Reliant dealers, Graham walker Ltd in Chester, built a Sabre (same as mine underneath but much prettier) that was factroy backed before relaint went bust. It was built nearly 10 years ago and had all one off internals. titanium rockers, Omega forgies, steel rods and a Lumenition ecu. Turbo wise it originally ran Rs500 T4 turbo and Pace intercooler for circuit racing, but they ended up on a T34 hybrid. Ive raced against it and to be honest the power delievry was crap for sprints and hillclimbs but the workmanship was stunning. the cars been sold recently and the engine blown up, so a new one along the lines of mine and yours is being built for this coming season, should be nearly ready by now i reckon.

,i would of been interested to see the power output with the rs500 t4 on there ,must have been using a LOT of boost,was this car successfull at all

[CNHSS1]

in between melting turbos and blowing engines, yeah it was quick. i think they got a bit disillusioned to be honest, they ran an SS1 like mine but with about 230-240 brake and that was good, but all the time and effort not to mention money that went into the Sabre didnt really pay off. I think it was just a lack of development. There was so many 'urban myths' as to power out put, but some just didnt add up to my mind. Ive heard 400bhp bandided around although around 300-340 with the T34 was the last figures i heard before it was sold. i suspect it was running 280-300 reliably but the T4 turbos and big boost were killing engines and parts left right and centre. Not a problem when a car dealership and factory was backing the car i suppose.
It was finally retired about 6-7 years ago and has passed thru a couple of owners since, before being sold to a current sprinter who blew it up testing it a month after buying it! a new modern spec engien should see it more reliable and quicker tho.
The only track i have data from that ive raced at and it did, my car was quicker ound the lap although slower max speed over the start/finish line. Rumours of when it ran full slicks and big boost, it ran 1.5 secs quicker than my best time so ive got summat to beat i suppose ;-)

[turbomike]

sounds a very interesting car,would be interested to see pics of car/engine posted up

[CNHSS1]

no worries, will do monday mate

[s13eater]

yeah craig, i was tol 340/400 bhp, i did have pics of it, the guy who bought the engine sent me some on my old pc, it had graham walker on it in big block letters.

[s13eater]

[sideways danny]

back to the original question, 2.5 inch should be big enough for 300bhp, the difference in size from 2.5 inch to 3 inch will change how and where you get the power really