sstaton1983 Posted March 15, 2014 Report Posted March 15, 2014 Got a clean 421 that just shrunk to a 358 cub. Right before my eyes. I had to split the case to do some trans mods and then I find the 513 65 mm pistons Hmmm... Well it's not a long rod... And it's only a 65 mm bore... I told the guy when I bought it that it's prolly a stock stroke, wish I was wrong.. Now whats the diff between a 358 and 421 cub? As far as power, from what I've seen around the forums is around 8 to 10 hp I know it won't have the torque. Quote
registered user Posted March 15, 2014 Report Posted March 15, 2014 well there is alot of dummies on craigslist. PO probly didnt know it was a 358 either . just boar it out .050 and youll have a 450 Quote
sstaton1983 Posted March 15, 2014 Author Report Posted March 15, 2014 It's a cub cylinder, which is plated. If it could be bored I wouldn't because my plating is still ok except a small spot of aluminum transfer. I heard some type of acid wil take it off. Quote
sstaton1983 Posted March 15, 2014 Author Report Posted March 15, 2014 Yeah, sorry just a little annoyed. It had stroker 17 cc domes in it. With .060 squish. At least the crank was welded. Quote
Starwriter Posted March 15, 2014 Report Posted March 15, 2014 I heard some type of acid wil take it off. Muriatic acid eats aluminum. You get it a a swimming pool supply store. Use a Q tip to apply it. Be VERY, VERY careful. It's NASTY stuff. Do not breathe the fumes from it. It's about 10 times worse than taking a whiff of ammonia. Quote
sstaton1983 Posted March 15, 2014 Author Report Posted March 15, 2014 Thanks for the info. Getting some from lowes tomorrow. Quote
Nightmare Posted March 15, 2014 Report Posted March 15, 2014 I have a cup every morning before work. Sent from my XT1080 using Tapatalk Quote
sstaton1983 Posted March 15, 2014 Author Report Posted March 15, 2014 I ordered a lock up and billet basket, clutches and steals from matt at SCP. I'm waiting on the lock up and pistons. Got the trans cut and back together. I still need custom domes and I'm kicking around the idea of sending the cylinder out for porting. I weigh around 150 lbs so I'm thinking it should run pretty hard. The guys I ride with all have bigger set ups and I'm wanting to hang with them. Quote
Nightmare Posted March 15, 2014 Report Posted March 15, 2014 You're doing all that and its not even ported? Sent from my XT1080 using Tapatalk Quote
sstaton1983 Posted March 15, 2014 Author Report Posted March 15, 2014 You're doing all that and its not even ported? Sent from my XT1080 using Tapatalk when I ordered all of it, it was supposed to be a 421. I figured a 358 cub needs it anyway, besides it wouldn't shift under power. I would get one good pass out of every five. Quote
camatv Posted March 15, 2014 Report Posted March 15, 2014 the 350cc cubs rip bigtime. you build it up with the right parts and noone will believe its a lil motor. Quote
WINDYCITYJOHN400 Posted March 15, 2014 Report Posted March 15, 2014 I have a cup every morning before work. Sent from my XT1080 using Tapatalk It's still not working on your chronic halitosis. 1 Quote
Nightmare Posted March 15, 2014 Report Posted March 15, 2014 Lol, in all seriousness it works great cleaning the tips on our irrigation wells. And I totally didn't snap it was a cub motor when I made the "no porting" comment. Sent from my XT1080 using Tapatalk Quote
sstaton1983 Posted March 15, 2014 Author Report Posted March 15, 2014 the 350cc cubs rip bigtime. you build it up with the right parts and noone will believe its a lil motor. That's what I like to hear...I'm running 34mm carbs, V Force 3's and CPI in frames. Shooting for av gas, or race gas,haven't decided. Quote
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