Rob the Red Top Posted December 16, 2018 Share Posted December 16, 2018 Well after many long days and evenings in the garage I'm almost there and I'm rather pleased with the outcome.. A few teething issues (I need to reduce the steering lock if possible?) and the head is coming off again to improve the porting as its isn't breathing well enough at the top end, but otherwise pretty much there. Specification Early lightweight race chassis (Narrow body) 2000cc Vauxhall ‘Red Top’ DOHC engine Costcast Head. Gas Flowed with titanium Vales caps, Double Valve springs, wasited valves Solid lifters Kent 1605 Cams Steel Rods Forged Pistons Dry Sump Ram air system ARP rod bolts, head bolts and flywheel bolts SBD Lightweight Flywheel, clutch and pressure plate SBD Ceramic paddle clutch, uprated cover plate to suit Tapered 48mm Jenvy Throttle bodies, Bosch Green 440cc injectors SBD inlet Manifold SDB Exhaust Omex 600 ECU Aero Quip Fuel and Oil Hoses High capacity radiator High capacity fuel pump, 3.5 bar regulator. Alloy fuel tank Type 9 Straight Cut Heavy duty Gear Box Front Willwood 4 pot calipers, Drilled and proved discs Ferodo Racing Pads Braided Hoses Two brake master cylinders with Front/Rear balance bar Rear Live axle converted to disc brakes (VW callipers with handbrake) Quaife ATB limited slip differential 4.7 -1 4 link rear suspension (adjustable) ProTech alloy adjustable dampers PlaySkool ARB 13 inch CR500 Superlight wheels on 888r ‘Caged’ FIA full roll cage Removable steering wheel with DigiDash 2 built in. DigiDash GPS datalogging. Lightweight fiberglass seats 4 point harnesses Carbon effect front arches Fibreglass rear diffuser 4.5 inch headlamps FIA isolating switch. 3 Quote Link to comment Share on other sites More sharing options...
AdamR Posted December 16, 2018 Share Posted December 16, 2018 Looks stunning, and a cracking spec! That'll be a rapid car. How much power are you expecting? Standard head is good for ~260bhp. Quote Link to comment Share on other sites More sharing options...
Kevin (Mr T) Posted December 16, 2018 Share Posted December 16, 2018 Looks superb! 1 Quote Link to comment Share on other sites More sharing options...
Murraymint Posted December 16, 2018 Share Posted December 16, 2018 Looking good...nice colour and spec... 1 Quote Link to comment Share on other sites More sharing options...
Rob the Red Top Posted December 16, 2018 Author Share Posted December 16, 2018 44 minutes ago, AdamR said: Looks stunning, and a cracking spec! That'll be a rapid car. How much power are you expecting? Standard head is good for ~260bhp. Is it.... I'm at about 225 at the moment but it isn't breathing well towards the top end of the rev range.. Looking for about 245ish if I can but maybe I need to change the cams as well? Quote Link to comment Share on other sites More sharing options...
Dave Eastwood (Gadgetman) - Club Chairman Posted December 16, 2018 Share Posted December 16, 2018 Suggests cams could be an issue then. Standard valve sizes and heads can normally get past that level. As Adam said, 260 is doable. The car is looking fantastic though, funny, we were only talking about it over coffee at the Peak District meet today; a real credit to you. I know SBD have some great cam choices for the Red top, I’m just not that familiar with them. “In the day” the QED Q450V was the real go to cam for the big power road going and track C20XE’s. (With some more track only/competition focussed cars going down the Q460 route, IIRC). Q450V’s could certainly give you an engine in that sort of 250 +/- ball park, whilst at the same time, in a car as light as an average Westfield, still being quite well road mannered and tractable, when you weren’t, ahem, going for it! 1 Quote Link to comment Share on other sites More sharing options...
Rob the Red Top Posted December 16, 2018 Author Share Posted December 16, 2018 That's very kind of you, thank you. It has been a bit of a journey with quite a bit of swearing and long days along the way..... I guess its normal for these cars to fight you at every turn.. I mean every job has been far from simple.. I think I will give SBD a call and see what they advise as It currently runs out of steam around 7600 so as you say cams are the way forward with an improved gas flow. I'm contemplating the sprint series next year so I want it to be right.. Thanks again for your kind words 1 Quote Link to comment Share on other sites More sharing options...
Rory's Dad Posted December 16, 2018 Share Posted December 16, 2018 Have you checked the mapping? 1 Quote Link to comment Share on other sites More sharing options...
Rob the Red Top Posted December 16, 2018 Author Share Posted December 16, 2018 It was mapped by Northampton Motorsport and they spent 3.5 hours sorting it out.. Quote Link to comment Share on other sites More sharing options...
jimbobtcc206 Posted December 16, 2018 Share Posted December 16, 2018 Rob, I’m running a standard head with standard valves. I’ve got solid lifters, double springs and uprated caps and platforms. I run the QED450 cams and it pushes 242bhp at 7,339rpm with a good spread of torque peaking at 180ftlb. It behaves well on road and is really good on track. Pulls like an express train. I was advised if I could get the QED450V cams it would make a bit more difference too. Your car looks mint mate. I love it! Well done. 1 Quote Link to comment Share on other sites More sharing options...
Rob the Red Top Posted December 16, 2018 Author Share Posted December 16, 2018 That's great advice thank you Jim. What exhaust are you running as I think that's an area that is holding it back as well…. I'm at 169ftlb. Quote Link to comment Share on other sites More sharing options...
jimbobtcc206 Posted December 16, 2018 Share Posted December 16, 2018 Mine has a full Simpson bonnet exit system on it. It’s a nice bit of kit. 1 Quote Link to comment Share on other sites More sharing options...
jimbobtcc206 Posted December 16, 2018 Share Posted December 16, 2018 1 Quote Link to comment Share on other sites More sharing options...
Dave Eastwood (Gadgetman) - Club Chairman Posted December 16, 2018 Share Posted December 16, 2018 4 hours ago, Rob the Red Top said: That's great advice thank you Jim. What exhaust are you running as I think that's an area that is holding it back as well…. I'm at 169ftlb. I doubt it, if it’s the SBD system. The Simpsons manifold on Jim’s car is “just” a bonnet exit version of the SBD manifold, if I recall correctly, they used the same primary and secondary lengths and diameters. The SBD manifold was, other than the Simpsons bulk buy manifolds, pretty much the de facto performance manifold for the majority of the Red Top Westfields for years. Quote Link to comment Share on other sites More sharing options...
Rob the Red Top Posted December 17, 2018 Author Share Posted December 17, 2018 Mine was built from the SBD design. However, I think the angles are a bit sharp where the tubes merge... Quote Link to comment Share on other sites More sharing options...
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