BUILDER Posted November 10, 2014 Report Share Posted November 10, 2014 You are arguing with everyone and in the long run you are going to cost yourself more money than shipping would be and see such a small gain in HP it will not be even close to worth it!! Plain and simple dude save your money up and ship your cylinders to the US and get them ported!!!!!!!!! That is the one and only answer to your question unless you want to buy aftermarket cylinders!!!!!! 1 Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted November 10, 2014 Report Share Posted November 10, 2014 You are arguing with everyone and in the long run you are going to cost yourself more money than shipping would be and see such a small gain in HP it will not be even close to worth it!! Plain and simple dude save your money up and ship your cylinders to the US and get them ported!!!!!!!!! That is the one and only answer to your question unless you want to buy aftermarket cylinders!!!!!!Some people are determined to build an inferior ebay bike. Quote Link to comment Share on other sites More sharing options...
tfaith08 Posted November 10, 2014 Report Share Posted November 10, 2014 Correct me if I'm wrong, but a 4mil with 795s and a spacer will result in 4mm more exhaust port height over the piston crown. If that is the case, you'll be making great top end, but you'll be pretty deficient on low end power. Don't get the Vito's pistons. They'll give you a nice gain, but they won't work well with custom domes or any decent builder's porting. Matter-of-fact, don't get any pistons until you have the cylinders off and shipped to a builder. If the builder recommends you have the cylinders bored, buy pistons through that dealer. Just save up and send the cylinders to a good builder. As for custom domes, I know that Redline and Noss Machine does them. Redline charges $85/set. BUT, you need to look at something. Of all the guys running some very strong bikes, they all have high-quality parts. You can get some things off of ebay, but you have to be very selective and do research. Get these: Custom domes for pump gas porting VF4s Power lid 1 Quote Link to comment Share on other sites More sharing options...
BUILDER Posted November 10, 2014 Report Share Posted November 10, 2014 Some people are determined to build an inferior ebay bike. Not trying to be a dick but when you come on here and ask a question and people give you the answer dont fucking argue!! LOL Okay I am done Quote Link to comment Share on other sites More sharing options...
Soskunked Posted November 10, 2014 Report Share Posted November 10, 2014 Not trying to be a dick but when you come on here and ask a question and people give you the answer dont fucking argue!! LOL Okay I am done Sorry but did I miss something? I don't think the guy was arguing I think hes just not keen to send his cylinders off to get ported because of shipping prices the hassle an what not..he did say in the beginning he knew we would mention porting which everyone knows is the obvious answer to get more hp Quote Link to comment Share on other sites More sharing options...
banshee jump Posted November 10, 2014 Author Report Share Posted November 10, 2014 Sorry but did I miss something? I don't think the guy was arguing I think hes just not keen to send his cylinders off to get ported because of shipping prices the hassle an what not..he did say in the beginning he knew we would mention porting which everyone knows is the obvious answer to get more hpthank you very much Soskunded right on spot finally someone understands :cheers imagine i send my cylinders the price for them going and coming back is gonna be hilarious Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
SandSlingerOR Posted November 10, 2014 Report Share Posted November 10, 2014 28mm carbs,custom domes,vf4's,timing plate. That'd be a just fine set up Quote Link to comment Share on other sites More sharing options...
banshee jump Posted November 10, 2014 Author Report Share Posted November 10, 2014 28mm carbs,custom domes,vf4's,timing plate. That'd be a just fine set upalready have the timming plate set at +4 i have boyesen power reeds as for carbs some people tell me its currently not necessary with my modss any thoughts Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
BUILDER Posted November 10, 2014 Report Share Posted November 10, 2014 already have the timming plate set at +4 i have boyesen power reeds as for carbs some people tell me its currently not necessary with my modss any thoughts Sent from my iPhone using Tapatalk Carbs will do nothing for you at this point other than burn more fuel. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted November 10, 2014 Report Share Posted November 10, 2014 hoyl fuck you two faggots are late. Already suggested those pistons and even gave a link to buy them.sorry, just read and responded. Didn't mean to make you take the dick out of your mouth to respond. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted November 11, 2014 Report Share Posted November 11, 2014 Correct me if I'm wrong, but a 4mil with 795s and a spacer will result in 4mm more exhaust port height over the piston crown. If that is the case, you'll be making great top end, but you'll be pretty deficient on low end power. Don't get the Vito's pistons. They'll give you a nice gain, but they won't work well with custom domes or any decent builder's domes.You are correct on the spacer moving times, and it's definitely better to use regular pistons with actual port work. But how would the Vito's SS pistons not work with good domes? Do the reliefs fugg up the flame travel? Just never heard of that and not sure I follow? Quote Link to comment Share on other sites More sharing options...
tfaith08 Posted November 11, 2014 Report Share Posted November 11, 2014 The crown is designed to mimic the dimensions of a well cut dome while paired with the stock head. Combine that with custom domes and you could have a negative squish band. Advance the timing and you're hosting a detonation orgy. I'm not 100% sure that the relief impairs the flame travel, but I'm sure it doesn't help. I mean, you have 2 raised edges which the flame will eddy across both during burn and when the exhaust port opens. When the piston approaches TDC and compresses the AFM, it now doesn't have only one place to go. Now, the mixture is divided, with a portion being superheated by the high edges that see all the flame action. Not to mention that the flame doesn't have quite the wedge-effect over a good 30% of the piston crown. The way I see it is that Vito's had a great idea and put some research into it. They improved on the porting and squish band and offered the pistons for less than the cost of a low quality port job. Thing is, if you actually perform the modifications that this is intended to mimic, you'll see a LOT more than the claimed 8hp of the Vitos SS piston. OP, we (or at least I) was aware that you didn't want to drop the money on shipping and porting. We just recommended it because it will absolutely be worth it. OR, you can keep an eye out for a set of ported stock cylinders on here. They usually go for $250ish w/o pistons. Quote Link to comment Share on other sites More sharing options...
tfaith08 Posted November 11, 2014 Report Share Posted November 11, 2014 Here's a thought: Call the site sponsors and see if they can get their hands on an extra set of cylinders for you. Explain the predicament and I'm sure they'll help out or at least point you in the right direction. I also know that Flotek used to sell his port maps for pretty cheap and would basically walk you through the process. Several amateurs ended up making more power with his port than he did lol. I know that Flotek isn't a very liked name around here, but a Grizzly flex shaft, a set of carbides, and a port map of his will get you some pretty nice results. Oh, and I believe the consensus is that VF4s > Boyesen. Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted November 11, 2014 Report Share Posted November 11, 2014 Shipping isn't the deal breaker, it's the import duties some countries charge, even on your own shit coming home. Quote Link to comment Share on other sites More sharing options...
banshee jump Posted November 11, 2014 Author Report Share Posted November 11, 2014 Shipping isn't the deal breaker, it's the import duties some countries charge, even on your own shit coming home. exactly my country has tight policies on shipping if i want to recieve my parts back i have to pay extra 200-300 dollars for the import tax Sent from my iPhone using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
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