Hi, I need your advise and help.
escort mk2, rally prepared and tarmac stage used, grp.4 replica except for the tranny and engine.
What exhaust manifold would you recommend ?
I'm Struggling with my Pinto output. At this moment only 140-145hp and nice 210 torgue.
dyno tested, ignition and jets modified many times. Always same performance . Big valve head, all ports machined, valve guides done, 2x 45 Weber DCOES on largest venturis that fit, cat cams rally camshaft kit, balanced and new bottom. Silver top facet pump and fuel pressure regulator. Everything checked / inspected by 3rd local company and their only concept is to change the exhaust. Now there is installed a 4 branch 4-2-1 type tubular exhaust manifold. 1.5" primary, 1.75" secondary, 2" exit - all on OD (I think 105-speed or sthg like that - bought many years ago and don't remember. Photos below). Please advise on proper exhaust or other areas of my engine if something above makes no sense to you ... thanks
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