MOD Motor Block Question

[Sneeks2nv]

I am looking at buying a new block to build up, so i have a fall back when i blow my current motor, but the question i have is:

if a teksid block has a steam port machined in for a 2v and 3v head, can i fill it or seal it up some how to run my 4v heads? thanks again

[91Notch]

ummm the teksid blocks came with 4V heads.

[IwinUlose]

dave, the block he is referring to is a darton sleeved teksid block that was machined to run a 2v or 3v head. I think you would be able to have machining done to run 4v heads. I would give john at modular performance a call an ask him..

[Sneeks2nv]

thanks IwinUlose, i guess i didnt realize how the small details help in questions asked. but exactly what he said. i think i am going to jump on this anyhow and see what i can make work. i have been wanting a 324ci in my car for quite a long time. it would definately help in turbo spool.

[IwinUlose]

i saw the post on Corral also. i would jump on it alo if i had the extra cash, but i need to take care of other things. Yes more cubes would definitely help spool faster. Do i smell a big bore 4v??????

[bitemark46]

I hope you're not looking for longevity. I can count on one hand on the number of BB strokers that are still running after 1 year and still have fingers left. You want it to last? Do neither. Just .020 over and make up the difference in boost. There many mod motors making over 800rwhp on stock displacement. John Mihoveitz 2000+hp TT mod motor is only 283ci, you don't see him needing the extra cubes. Its not needed. Spend the money elsewhere.

-Mark

[91Notch]

There is away to make it just under a 302 with using the right crank and rod combo.

That will probably help with longetivity if you feel you really needed that extra cubic inchs.

[Sneeks2nv]

well if i do get it, i plan on doing a big bore stroker 324ci combo. i know its popular with some and not with others, but that is the combo i have always wanted. i know there have been some sucess stories and some failures. but for the price of the block/sleeves i am willing to take a risk and see what i can do with it.

just like anything, i know it wont run forever and the harder you push it the more chance of failure there is. but i am on borrowed time now for the most part, especially when i turn the boost up to 20psi and spray 100 or so in first gear.

its either that or an auto (th-400 or glide). i was really considering ditching the 6spd and going auto, but then this came up and i am really leaning forward on getting it. im still not 100% sure, but i do appreciate the advice from all of you and it weighs in my overall decision.

[bitemark46]

Originally Posted by 91Notch

There is away to make it just under a 302 with using the right crank and rod combo.

That will probably help with longetivity if you feel you really needed that extra cubic inchs.

Other than a stroker crank what other ones are there? The 4.6 doens't need a longer stroke, it needs a heigher deck height (aka 5.4). IMO if its going to be a FI motor its a waste of money to increase cubes. BB or stroker.

Just to let you know here is a pic of a stroked 4.6. Granted it was spun 8500 but it didn't last but maybe a year. Side load FTW!!!

[bitemark46]

Oh also that darton sleeved block.. was it wet sleeved or dry? -Mark

[Sneeks2nv]

Originally Posted by bitemark46

Oh also that darton sleeved block.. was it wet sleeved or dry? -Mark

it is a wet sleeved block, 3.70 bore if im not mistaken.

[bvh]

iv seen this more than once on a stroker , and the power gain dosent over way the risk imo!

Originally Posted by bitemark46

Other than a stroker crank what other ones are there? The 4.6 doens't need a longer stroke, it needs a heigher deck height (aka 5.4). IMO if its going to be a FI motor its a waste of money to increase cubes. BB or stroker.

Just to let you know here is a pic of a stroked 4.6. Granted it was spun 8500 but it didn't last but maybe a year. Side load FTW!!!

[bvh]

i dont know every thing about mod motors . but i though a short block was a short block and u could put 2v , 3v , or 4v heads on it . sneeks2nv for the best answer call the builder .

[EFI-Unlimited]

I dont see any compelling reason to shy away from a BB setup. However, you may have problems with siamese sleeves like the 324, if you do not know what to do with the steam holes. The proper solution is not to block them off in the block, but drill them in the head (and gasket), unless they are cross drilled in the block like the BOSS302.

There is no reason it can't work reliably, so long as you pay attention to the details. If you think you can just buy a 3.7 bore block, order some 3.7 bore pistons, and you are home free, you should probably stick with a standard displacement motor. You need to have a thorough understanding of what you are engineering if you expect it to work correctly.

The people that have these horror stories are probably a little more 'git 'er done' and a little less Jon Kasse.

Brian
EFI-Unlimited

[bitemark46]

BB motors are great for N/A and mild boost applications. But to try and stuff a good amount of boost down its throat IMO is asking for trouble. Just not enough material between the cylinders. Its great to be pioneer on something but people forget on how much money they have spent...err.. wasted to get the right combo.

Brian- I do agree that it isn't as easy as throwing a bunch of parts together and expect it to work but there is a reason on why there are a very limited amount of engine combos as the OP wants. For one a BB stroker is very expensive and two there is less than a handful of engine builders that know how to build a strong N/A mod motor that will last. Hence the first reason.

I say if the man wants more cubes to go 5.4. Big and flat torque curve without the issue of side load on the piston. Plus more cool points IMO.

-Mark