Printable View
Hi I am new to this stuff I got my first BBC 402 last summer and i am in the begging of assembling it. the block was line honed and I see main Barings for cranks that have been turned but what do I do if it was line honed? And I picked up a gear drive set will I have trouble installing that???
/////////////////
Agree with Pat....dont go with the gear drive. It does nothing good at all. And you might think the noise is cool for now, but believe me, in 3 or 4 months, you will wonder what you were thinking when you put it in. Just go with a good double roller chain setup. John
I don't quite get what you mean by main bearings that have been turned. Whe I build a motor I make sure and line bore the block to make sure that all the crank journals are perfectly true. After making sure the crank is right I just install the proper bearings with assembly lube and go for it. As far as the gear drive goes. just make sure and read the directions that came with it and you will be fine. PS they really make a blower stand out
It has been proven time and again that you can make more power with a chain than you can with a gear. If it's just that you want the noise, go for it, but I will venture to say that you'll be sick of hearing it in a short while in a street driver.
Man, I have no idea where the heck you got all that from. All I was saying was that I had my mains line honed by the shop, and I was wondering if there is gonna be any problems with putting standard bearings in. Do I need to go larger? They were just honed and not bored. The block has no cracks or dammage and is fine. Also whats up with everyone hating on my gear set. I know what they sound like and its fine. I just wanted to know about any potential installation issues with this.Quote:
Originally Posted by pat mccarthy
http://www.cardomain.com/ride/2263635/1
The question about the line honing is probably best asked of the engine shop that did it. They can tell you better than anyone else. Otherwise, put the caps on, torque them down, and measure the bore. See if it's still within specs. If so, you'll be fine. If you're building this yourself, dont go without measuring everything. Is easier to do it now than to have to pull it apart later. And as far as the gear drive, if it's the noise you like, go for it. I think the feeling of most people is that they are something that sounds cool at first, but gets old really fast. I know mine did many years ago. I'm of the opinion that if you want a blower type of sound, get a blower. But to each his own. As far as installation problems, Im sure you got instructions with them, just read it twice before you start. They are easy to install and fit. And Roy, could you explain this a little more??I think a blower that's set up right has a sound all it's own, and certainly stands out on it's own. JohnQuote:
PS they really make a blower stand out
Was the crank turned also?Quote:
Originally Posted by MKUBIAK402
Hopefully when they align honed the mains they cut the caps before they honed the main bearing bore. If it is done right, no reason to run any bearing other then the bearing that is correctly sized for the journal diameter of the crank. As far as all the information on checking the cap registers, it's more for building a true blueprinted motor vs. just bolting one together with store bought parts..... No reason to get all up tight because Pat gave you more information then you wanted. Then the dreaded gear drive. All anyone said is that they make an ungodly noise that will sometimes not allow you to hear other malfunctions in your engine, and that a chain and gears actually produces more horsepower. I would just add that a gear drive does away with the ability of the chain to absorb some of the harmful harmonics produced within the reciprocating assembly. But hey, run your gear drive and impress the kiddies if that trips your trigger......Quote:
Originally Posted by MKUBIAK402
///////////////
My 32 Plymouth is going to have a 350 with a 6-71 Blower. I know it sounds really good all alone but I really just wanted a gear drive to have more precise timing and didnt really care about it's noise. This is a very mild 350 so that I can drive it on the street dependably. Plus I was bored one day
//////////////////
Pat,you must be reading my mind.What you said covers the subject 100%.Quote:
Originally Posted by pat mccarthy
A lot of people still don't get with a gear drive all the harmonics from the valve train are transmitted directly to your crank.
----------
:
I don't know if I could sleep well at night knowing that a $50 timing chain would work much better for them.Quote:
Originally Posted by pat mccarthy
ok ok whatever on the gear set I got it for $10, I do have a roller set if I need it. I got a set of pistons on summit to fill my big 119 CC heads and I wanted to get a good 9.5:1 P/N:TRW-L2328F30 press fit. I think I fucked up it has a Pin Diameter of 0.989 and don’t see rods with that. All I see are rods with .990 are they just rounding up?????
that would be .001 clearance for full floating pins, they should have come with spirolocks or c-clips for the piston pin bore retainer grooves.... Pat is the big block guy, he'll know for sure. If you mic the inside bore of the rod big end and the outside of the pin you would know your clearance for certain.
///////////////////////
Pat you cant even speak english!!!!
Mkubiak, you asked for help, then you insult the ones trying to help you. Everyone does not write perfectly, but I always get what Pat is explaining. He has probably forgotten more stuff than you and I combined will ever know about engines. If you're gonna cop an attitide, there are lots more forums that might want to help you. Most 'new guys' sit back and read for awhile, get to know the people in here. If you took time to do that, you might be better off.