Thread: Plans for High CR VE build

i saw the disclaimer

Again the bottom end is pointless since the head and intake manifold are the bottle neck.

But I would like to see a dyno of what he builds and that will put everything to rest.

Good stuff so far.

NO BORE AT ALL! I don't trust anyone around here. So, 87mm pistons in a UNBORED block is fine? Just honing will do the trick? If so, I go for the 87mm. Should still be able to use the OEM VE metal head gasket.

Still undecided about 4cw NO girdle vs. 8cw w/girdle. Not going to rev that high. Just to the N1 cams limits. My biggest thing is, RELIABILITY. Just want to do it right the 1st time around.

Also, VE rods or DE rods?

I know the bottom end is NOT pointless! If you have read/kept up with what some of the Puertican(you know who you are) guys are doing. Making around 18hp and 15ft lbs at the wheels, just by swapping out higher compression pistons alone. They got dyno #'s.

The head and intake manifold are not the bottleneck. If you start enlarging them then you are going down a dark path.

There's a reason why the 20V head is superior to the regular 20ve and it isn't because it has larger ports.

The 20v head is cast completely differently than a regular 20ve

You cannot replicate a 20v head on a 20ve. a 20v head is not in the scope of this conversation since the OP doesn't have one.

The head and the Intake are the bottle neck and i am completely happy to disagree with you on that. And very soon ill have a dyno to prove exactly what im saying.

Any 20ve bottom end will hold together with any NA build. putting 16ve pistons in is nice and all but as I asked in the PR thread where they showed a dyno, what are the SAE corrected numbers?

Simply put I am willing to bet i can make more power on the same cams with a stock 16ve bottom end with headwork and custom header/IM than someone doing no headwork and fiddling with the bottom end of a 20ve

one quick edit, and I bet my 16ve will be more reliable too

thats sad that you dont trust a machine shop to do simple work to your block. Machine shops work with all different sort of blocks from every make and model. theres nothing special about an SR block. and ps. 12:5 isn't high compression.

whats the reason? the angle of entry/exit of the ports? the factory valve job? Larger ports dont really make the head flow more but iam sure you know that, but when your going with more displacement larger ports do help especially with boost.

i have to disagree. the head is most certainly not a bottle neck. maybe the limit to n1 cams is a bottle neck. a simple port match on the intake side will make a huge diff and can be done with a dremel at a dinner table.

the lack of compression and bottom end cc is the bottle neck (to a limit).

take a look at b series honda motors and what those boys do with a stock head with good cams a stock intake mani and a high compression 2 liter bottom end.

the ve head flows just as good if not better then a b series head and those honda guys make alot with stock heads and a good bottom.

the bottle neck really is compression, cams and a header.

stratton.

a b series motor was not designed the way a 20ve motor was designed.


I look forward to the first of you to his this magical 230whp with a stock head, compressions, cams and a header. I hope someone is doing the cam testing for everyone...oh wait!!

O.K. there guys go again off the subject. Head porting, cams, intake manifold, etc.. But, if we must. I'll just chime in a LITTLE. Head, will get a light port match job. I will be getting turbofreak header. Intake manifold, bottom line is. There is NONE! Besides custom ITB's or O2 induction. Not what I want. Enough with the head arguments.

I don't care if someone can make more power then me. Or is more reliable. And, I DO NOT care if you think 12.5:1 is not high compression.

Let's try to get back to the BLOCK.

Dude, how can you say that the bottom end is pointless and that the head and intake mani are the bottleneck? You have no clue what he has done or what he is using to make that assumtion. For all you know he could have already cleaned up the head and is having a custom IM or ITB's made and a custom 4-1 header.


Edit: I had this written out but didn't click the post button, I got busy. Didn't know that he already responded