camatv Posted July 20, 2015 Report Share Posted July 20, 2015 cnc tunnel porting sounds like a big time winner!! 421 cub is pretty much drag ready right out the box. get the domes right right pipes good tune alky carbs your sitting on 100 hp pretty easily. so you dont really need to know shit about porting its this fact that has made a bunch of not really porters seem like a good shop. getting a nice midrange overall setup has seemed to be the killer with most places.. not to many can lay out a nice flat curve in the 75-80+ hp range. even with servals its seeming hard to do unless you really know whats going on in there. even new porters should be able to have a lot of fun with these cylinders. and knowing your not going to be plauged with nico issues or weld leaks is even better Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted July 21, 2015 Author Report Share Posted July 21, 2015 Were seeing high 70's low 80's and 45 ftlbs of tq from a 421 with 35mm carbs and cpi or shearer pipes with very little intake and exhaust work, other than adjusting the port heights to just under a cub as cast. While talking on the phone with someone today I had to explain how "as cast" is going to be only sold as un-plated cylinders. We wont be sending as cast to be plated, the cylinders we'll sell ourselves will all be ported to some degree. A port job, effectively a "dune" port job will replicated on the cylinders that we have plated and will sell as bolt on kits with our pistons and domes etc. We can at the time of purchase port your cylinders to however you like for an additional cost. Another question I was getting was whether or not there were room for "boost ports"? Today I figured that out. This is the result of about a hour and a half figure out where to drill and how to start them to a ported finished product. Builders that are handy with porting tools like Cam said should really shine with these. 1 Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted July 21, 2015 Report Share Posted July 21, 2015 Awesome! 1 Quote Link to comment Share on other sites More sharing options...
justsmith94 Posted July 21, 2015 Report Share Posted July 21, 2015 Those are awesome. I will for sure be ordering a set in the future or whenever my job allows me to work on my shee again! 1 Quote Link to comment Share on other sites More sharing options...
Deadbeat Posted July 21, 2015 Report Share Posted July 21, 2015 really cool stuff Billeh 1 Quote Link to comment Share on other sites More sharing options...
registered user Posted July 22, 2015 Report Share Posted July 22, 2015 On the +4 cilinders do you know approx what the timings would be with 65MM bore ? Something fairly low would be prefered. At bdc is the piston edge flush with all the trans floors ? Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted July 22, 2015 Author Report Share Posted July 22, 2015 They're 30mm at 68 bore the triples are 29mm. 7mm cylinders are 32mm and 33mm triples. 189/190 exhaust on all the strokes as cast. Quote Link to comment Share on other sites More sharing options...
registered user Posted July 22, 2015 Report Share Posted July 22, 2015 Transfers in the low 120's ? Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted July 22, 2015 Author Report Share Posted July 22, 2015 They are low, 120-122* Quote Link to comment Share on other sites More sharing options...
BANSHEEBEEFM2M Posted July 22, 2015 Report Share Posted July 22, 2015 Price on a complete 10mm kit unplated? Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted July 23, 2015 Author Report Share Posted July 23, 2015 Price on a complete 10mm kit unplated? $375, raw unplated, no pistons. Quote Link to comment Share on other sites More sharing options...
BANSHEEBEEFM2M Posted July 23, 2015 Report Share Posted July 23, 2015 When will we see some dyno charts on them? Will you guys do the porting in house or send them out? The 775 is a great deal. But buying an unplated set, by the time you port and replate, your lookin at well over a price of a cub and more hassle. What are your prices to port? Can transfers be opened up more then stock? Is it a triple exhaust? If not, why not lol. You guys are the shit, great customer service fast shipping etc. We haven't seen any drivline drag ports yet though, dat'd be interesting, or even doing a deal were you can port it and plate it after if someone wants to pay the extra, most builders I know will port an unplated cylinder cheaper because u gotta be careful in there with fresh nik. Just IMO, and if these sell good, will we see any bigger bore sizes then the 68? Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted July 23, 2015 Report Share Posted July 23, 2015 ^ needs to slow down. Gotta crawl before you walk, and walk before you run. These will be a good ALTERNATIVE to the CP stuff. 1 Quote Link to comment Share on other sites More sharing options...
BANSHEEBEEFM2M Posted July 23, 2015 Report Share Posted July 23, 2015 ^ needs to slow down. Gotta crawl before you walk, and walk before you run. These will be a good ALTERNATIVE to the CP stuff.What u tryna say fam? Been walkin. Lol Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted July 23, 2015 Report Share Posted July 23, 2015 What u tryna say fam? Been walkin. LolThe cub didn't come out with crazy numbers on day one, and the serval didn't (stiil doesnt) make 80/50 out the box like supposed to. Time will provide enough people to learn what these want. 2 Quote Link to comment Share on other sites More sharing options...
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