rebuild

[Quickstop [UK]]

Hi guys,

I have a quick question for those of you that have done engine builds before.

I am doing mine this year and am not going all out at the moment, just want reliability.

I have ordered pistons, rings, ARP studs, new mains, cometics and a few other bits and bobs and they are on their way from RPM I hope by now!

I am puting in the JE pro pistons with childs and albert rings and am just after a solid truck, but later I would like the option to upgrade a bit further.

Should I spend some money on the eagle rods now or leave them stock - all I am changing at present are the pistons.

How much will the stock crank and rods take before I start to need new bits?

If I do put the rods in but do nothing to the crank/mains apart from a polish, how much power could it take if I decided to up the power a bit later on?

Or should I save my money for now, use the stock rods check them and start building a second engine for the real power - vortecs, 4 bolt mains, etc etc....

I am really not planning on going crazy for now but I am just a bit unsure - kinda feel like I should remove the stock rods while I am in there. I have a 20G and don't want more than 400hp off this build. Will the 20G even go to that?

Thanks,

Mark

 

[Andreas]

Re: rebuild

Personally I would go for new rods, nitrate the crank and 4-bolt conversion right away and be done with it. Chance is that you will find some of the rods slightly bent anyways.
Later mods like turbo, heads etc are all engine-in-the-truck mods.

 

[Quickstop [UK]]

Re: rebuild

I am tempted to do that, but I am trying to keep the costs down

How much to nitride a crank?

How much could the stock block make if I were to do that and add the rods?

 

[dgoodhue]

Re: rebuild

Stock rods are junk, basically its the same weak point as the stock pistons. At the very least I would find some used L35 or L31 Vortec Rods.

 

[bezerk]

Re: rebuild

i offered you ...nitrited crank Eagle rods SRP pistons and Je piston rings for €1200 with new bearings...
or so?

 

[Quickstop [UK]]

Re: rebuild

thought you sold them?!!!!

dammit.

How much for the crank and rods then ? How are you mate?

 

[bezerk]

Re: rebuild

thought you sold them?!!!!

dammit.

How much for the crank and rods then ? How are you mate?

doing pretty good.
dunno, i don't know what to do with just a set of pistons

 

[Quickstop [UK]]

Re: rebuild

how much work is involved in the 4 bolt conversion?

thinking of getting my crank cryo treated as well so I have a solid bottom end for later on....

Anyone done that?

Just found out the company Frozen Solid live just up the road from me!!

 

[turbodig]

Re: rebuild

how much work is involved in the 4 bolt conversion?

thinking of getting my crank cryo treated as well so I have a solid bottom end for later on....

Anyone done that?

Just found out the company Frozen Solid live just up the road from me!!

Cryo would be better than Nitride. Further, one will usually screw up the other.

Nitriding processes are a form of casehardening... they form a hardened layer around the metal that resists the formation of surface cracks. Grind deep enough, and you wreck the caseharden.

Cryo treats the grain structure of the entire object, lowering the internal stresses on the part. Anything that involves heat after that tends to introduce new stresses.

 

[Quickstop [UK]]

Re: rebuild

so nitriding requires heating - I see. I didn't know much about it but I guess that makes sense!

Well I can get the crank done for $300 equivalent so will do that as well as putting in the eagle rods. Hopefully I should have a very solid bottom end for the eventual vortec upgrade one day.

Should I put in solid motor mounts? What is the advantage of having the mounts solid?

As far as the 4 bolt conversion, where can I get info on how to do that? Are there any specs I can give to the machine shop or is that something that the machinist should know?

Thanks,

Mark