slopoke Posted August 24, 2009 Report Share Posted August 24, 2009 Ok guys, Need some opinions once again. Prefer opinions with some type of experience behind them as I have none on this matter. Here is the deal. I want to know which will perform better. A set of full drag ported stock jugs or non ported 68mm cubs on a 4mill? I know later I can port the cubs but it would be a while. Quote Link to comment Share on other sites More sharing options...
kr0nic Posted August 24, 2009 Report Share Posted August 24, 2009 Going to be the cub. Just from a performance standpoint, you have 13 ports with a cub, and 9 with a stock jug, do the math. Quote Link to comment Share on other sites More sharing options...
trex banshee Posted August 24, 2009 Report Share Posted August 24, 2009 ill agree with you on the port layout, but just cause it has 4 more ports doesnt really mean anything towards this guys question. Go to the track, ive seen many 4mill stock cylinders out run 4mill cubs. Quote Link to comment Share on other sites More sharing options...
slopoke Posted August 24, 2009 Author Report Share Posted August 24, 2009 ill agree with you on the port layout, but just cause it has 4 more ports doesnt really mean anything towards this guys question. Go to the track, ive seen many 4mill stock cylinders out run 4mill cubs. this is the info i am needing. I am talking ported stock vs unported cub. THANKS Quote Link to comment Share on other sites More sharing options...
FASTOYS Posted August 24, 2009 Report Share Posted August 24, 2009 Stock cyls vs Cubs when both ported we have seen them tit for tat, dead even in 100 yrds sand drag. BUT in a longer run the Cubs alwasy pull ahead! Drag stock vs stock cub prolly the stk cyls. But dont forget, neither will run optimum without all the correct components. Quote Link to comment Share on other sites More sharing options...
00tbanshee Posted August 26, 2009 Report Share Posted August 26, 2009 i've ran a set of 4mil stockers drag ported cyl from kevin at hjr and a 4mil that just had a clean up. if it was me, i'd pick the stockers over the cub,but if your thinking of going faster down the road then go with the cub, cause once it was drag ported from kev,i liked it alot better. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted August 26, 2009 Report Share Posted August 26, 2009 I would go with a reputable builder if you're going to go with a stock cylinder setup. Some builders "Drag porting" is nothing more than a dune port....just making bigger holes is not the answer. IMO...I would go with a 4 mil stock drag port. Because once you have a little more loot, you can drop on a 4 mil cub cylinder, which I'd take over either the stoke stroke cub OR 4 mil stock cylinder drag ported. Cubs take very little work to run good. They run bolted on. OEM cylinders need a lot of grinding. And as Jeff said...it's a whole package! Quote Link to comment Share on other sites More sharing options...
slopoke Posted August 26, 2009 Author Report Share Posted August 26, 2009 I already have the 4 mill crank,35mm pwks gas and alky, cut domes for 4 mill, and all the other bits and pieces needed. I have a set of stock cylinders but by the time I have them ported and bored I would have as much in them as I could get a cub cyl for. I found a new 68mm 4mill stroke cub cyl for 600.00 It has a fuel pump tap but I could block that off I guess. I am kinda leaning toward the cubs. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted August 26, 2009 Report Share Posted August 26, 2009 If you found a 4 mil cub NEW and Plated for 600 bucks buy it right now. You'll need 573m6800 pistons and new domes cut (big bore domes, I'd say 20 cc to start) Best bang for the buck. A 4 or 10 mil cub is very, very hard to beat for the money. Quote Link to comment Share on other sites More sharing options...
slopoke Posted August 26, 2009 Author Report Share Posted August 26, 2009 If you found a 4 mil cub NEW and Plated for 600 bucks buy it right now. You'll need 573m6800 pistons and new domes cut (big bore domes, I'd say 20 cc to start) Best bang for the buck. A 4 or 10 mil cub is very, very hard to beat for the money. Thanks I think that is the route I will take. Is that a blaster piston? Is 20 cc ok for alky??? on a big bore 4mm?? Quote Link to comment Share on other sites More sharing options...
FASTOYS Posted August 26, 2009 Report Share Posted August 26, 2009 Yes they are Blaster pistons. 20cc work great for most Cub applications depending on fuel requirments and alltitude. Call me and i will be glad to hook you up with everything you will need to go with those used cub cyls. so we can make sure your headed in the right direction. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted August 26, 2009 Report Share Posted August 26, 2009 Another thing I can tell you is...if you're going to go with a builder...stay with them. Any builder will have their own set way of doing things. Rarely do two different builders approach a solution the same way...rather what has worked for them in the past. If you take 50% of one builder's advice and 50% of another, you're more than likely going to get mixed results.... When I had my 4 mil cub, Jeff helped me put together a stout little motor...but he also took the time to make sure I had what I needed. Like washers, seals, gaskets etc., the little things, OEM things to help the build go smoothly. That being said, I turned to Kevin Herr of Herr Juggs racing to port my current motor, 10 mil cub, and it is a stout runner as well. Pick a builder, run with them....HQ is lucky to have some pretty good guys helping us out in that department. Quote Link to comment Share on other sites More sharing options...
slopoke Posted August 26, 2009 Author Report Share Posted August 26, 2009 The cylinders I am reffering to are new not used. I am thinking I am going to run it stock cub port for now. I am going from a stock stroke drag port to the stock port cub 4mill. I haope I will see a difference. I know porting the cubs will make alot of difference but funding is limited. Thanks to all for the help. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted August 26, 2009 Report Share Posted August 26, 2009 I disagree with your last statement. The cubs are great out of the box. On a stock cylinder, you could easily double and sometimes triple the HP output of them vs. stock. From what I've done, seen and heard...you can probably coax 5 to MAYBE 15% more out of a cub in an ideal setup. The cubs are that good bolt on. They should have the casting flaws cleaned up...I did my own on my 10. When you start out with a great product, improvements aren't as easy to come by. Quote Link to comment Share on other sites More sharing options...
slopoke Posted August 26, 2009 Author Report Share Posted August 26, 2009 OK so you are saying that porting the cubs will not yield a big gain like the stockers? So I guess I would be better off putting the money for porting in other areas? I can handle the clean up. I took the time with my stock cylinders after they came back from porting to polish the intake and exaust ports to a mirror finish and tried on the transfers, It prob didn't make and difference but I felt led to do so. Quote Link to comment Share on other sites More sharing options...
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