![]() It was the same both with a VW muffler and an aftermarket (stock replacement) one. I actually had the engine mostly together, but then discovered that I couldn't fit the muffler to it - it was too narrow by about 5 mm overall. It's not sounding at this point like that's possible, since the head can be moved back out with shims but the cut-away quench area stays where it is. 7.5 to 1 is really too low for stock? I got the number from the blue Bentley book from the specs for the 1500 engine - did it change for the dual port heads and larger displacement of the 1600?Īgain, this engine is supposed to be stock and run on 87 octane pump gas. Thanks for all the -> I've already put the bottom end together with a stock cam, and have all the stock externals -> No step left in the chamber. Due to machining noise causing missed calls all calls will be returned promptly. I will be happy to speak to anyone who has a serious inquiry (meaning real potential business for RC enterprises) or a parts order. Please use email for all general inquiries. 225X60's rear, 145's front on Porsche Chrome Nipple Wheels. 040.Ħ4 Bug, White, 2017, Dual Weber 44's, Engle 130/Engle lifters, Home P&P'd 40X35 heads, CB 4340 nitrided crank, Eagle knock off H Beam 5.5" rods, Lowering Beam, Rancho Trans, Traction Bar. I believe the GO1 is a Brazilian stock head? Do they have a step ridge in the chamber? If so you add that into your deck height at. It will actually run fine with a shallow chamber because of the flycut. With a small deck you will have no problem with detonation and just run higher octane. Run it "high" compression! Put premium pump gas in it. I am an expert at fitting things in holes, been doing it a long time A set of little Dells or 36IDF's and a header, full flowed, its a great daily engine with a little pep I just punched some figures into the calculator you linked, and if you shim to 50 thou deck you will get a 8.6:1 CR, with a W100 cam it would run sweet with no detonation problems. The calculator at CB Performance tells me I would need a total deck height of 0.110" to get a 7.5:1 compression ratio.) (I measured the combustion chamber size with oil in a syringe, and came up with approx. There's no manufacturer's name on the heads, just 'G01' and P/N 040 101 375. Am I better off selling these heads to someone who wants them cut and buying different, uncut, ones? My deck height would be far in excess of 0.060". I was told that I could use shims to restore the proper compression ratio, but after reading this topic, I'm afraid of causing uncontrollable detonation. They have been flycut what appears to be 0.060" deeper than stock. I picked up a pair of rebuilt cylinder heads for cheap, and I plan to use them in a stock 1600 dual port engine I'm building to sell. Posted: Mon 6:43 pm Post subject: Will using these flycut heads cause detonation? Quick sort: Show newest posts on top | Show oldest posts on top Will using these flycut heads cause detonation?
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