101MM Stroke 7MGE

[DEFIANT 7M]

2618 eh, probably a good idea for that kind of compression. I am a little surprised at a few things, who designed them? I'd really like to take a look at the ports and a better look at the throat area but I understand why, looks like the valve guides were ground all the way to the port roof? Can't wait to see it run

The head was sent to Diamond. They digitized each chamber and then collaborated with my builder to make pistons a that would suit my application (high comp/nitrous). Yes the guides are ground to the port roof. The pics are the very first and only pics! There has been major changes let me say that.

 

[DEFIANT 7M]

why didnt you go with a big lift cam? last time i checked ur were trying to get a cam in the .500 lift...

:icon_bigg I have two different grinds.

 

[DEFIANT 7M]

Got my rear tires and front wheels today:love: I have a pic of the front and rear tires side by side also.

 

[madsupra88]

:icon_bigg I have two different grinds.

so you have A big lift cam?? what kinda of lift

 

[Figit090]

This has to be my favorite pic! What does a stock piston/rod with a 101mm stroke look like @ TDC?:biglaugh:

HOLY CRAP!! I never knew how much different this was...if i did, i forgot! I didnt know what stock was, now i do! amazing..

that's a bore plate? I'm imagining you made a thick plate for the head to sit on? totally newb guess there... but i can't think of any other way for that kind of stroke clearing the head. if i'm right, do you have to use two headgaskets now?

awesome work bud i can't wait to see videos and such! nice rim choice too! you fronts are bigger than all my tires lol.

i forgot, do you have a HP estimate on this build?

 

[gofastgeorge]

Well, I made it through this whole thread........

Can you get more of the flanges to do the RB throttle conversion?
Can you get them out of aluminum, say .375"-.500" thick ?
I have the RB throttles, and would love to do this.

What did the dry sump pan cost you ?

Also,
You may want to re-think running the cut-off oil pump drive shaft.
The timing belt induces a considerable amount of side load on that pulley/shaft.
Without the rear bearing to hold the shaft in alienment, it will cock the shaft off to one side at an angle.
I doubt if the plain bearing will survive very long.
I would guess just minutes.....

Just a thought......

Cool build !

 

[DEFIANT 7M]

so you have A big lift cam?? what kinda of lift

Yes...(.450)

HOLY CRAP!! I never knew how much different this was...if i did, i forgot! I didnt know what stock was, now i do! amazing..

that's a bore plate? I'm imagining you made a thick plate for the head to sit on? totally newb guess there... but i can't think of any other way for that kind of stroke clearing the head. if i'm right, do you have to use two headgaskets now?

awesome work bud i can't wait to see videos and such! nice rim choice too! you fronts are bigger than all my tires lol.

i forgot, do you have a HP estimate on this build?

Thanks man...:icon_bigg The bore plate is only used for machining only. Oh I got you...No the pic is a stock piston and rod on the stroker crank. My pistons have a different wrist pin height. Which makes them drop to factory deck height.

Well, I made it through this whole thread........

Can you get more of the flanges to do the RB throttle conversion?
Can you get them out of aluminum, say .375"-.500" thick ?
I have the RB throttles, and would love to do this.

What did the dry sump pan cost you ?

Also,
You may want to re-think running the cut-off oil pump drive shaft.
The timing belt induces a considerable amount of side load on that pulley/shaft.
Without the rear bearing to hold the shaft in alienment, it will cock the shaft off to one side at an angle.
I doubt if the plain bearing will survive very long.
I would guess just minutes.....

Just a thought......

Cool build !

I may be able to. I got everything from Arnout..he may get on from time to time. He is in Finland. I am working trying to have a casting made. My pan was $250 or so if I remember right. We plan on using a shorter timing belt that would eliminate the oil pump drive shaft all together.

 

[DEFIANT 7M]

HOLY CRAP!! I never knew how much different this was...if i did, i forgot! I didnt know what stock was, now i do! amazing..

that's a bore plate? I'm imagining you made a thick plate for the head to sit on? totally newb guess there... but i can't think of any other way for that kind of stroke clearing the head. if i'm right, do you have to use two headgaskets now?



i forgot, do you have a HP estimate on this build?

See the difference in the piston pin height.

The goal is three hundred......shop talk is 385-420ish without the nitrous.

 

[madsupra88]

Yes...(.450).

did you have to clearance the head alot ? u think i can get away with .400 without clearancing ?

 

[DEFIANT 7M]

did you have to clearance the head alot ? u think i can get away with .400 without clearancing ?

I decieded to use the small cams first. But I will have to clearance the head for my big cams. I doubt you can get away without clearancing.

 

[DEFIANT 7M]

Some shinny stuff.

 

[Figit090]

See the difference in the piston pin height.

The goal is three hundred......shop talk is 385-420ish without the nitrous.

ahh, i seee. thanks. I thought that 'test fit' was the actual setup and i was like...what the hell? :aigo: lol.

I wonder if it would work to have a plate to raise the head off the block, with a plate and two gaskets, or one thick gasket, a few cm's thick...

OMG nice shiny stuff! your engine is going to be the best GE ever!! how pricey is that plating?

 

[DEFIANT 7M]

ahh, i seee. thanks. I thought that 'test fit' was the actual setup and i was like...what the hell? :aigo: lol.

I wonder if it would work to have a plate to raise the head off the block, with a plate and two gaskets, or one thick gasket, a few cm's thick...

OMG nice shiny stuff! your engine is going to be the best GE ever!!

Actually some high comp big stroke Hondas due weld a plate to the deck!

http://www.team-integra.net/sections/articles/showarticle.asp?ArticleID=20

 

[MrWOT]

Actually some high comp big stroke Hondas due weld a plate to the deck!

Yeah, no getting around the piston outrunning the flame with a low R/S at high rpm. Usually they are brazed, and as long as you can source the correct sleeves and custom rods, and have the hood space, it's great for race engines. I've seen folks hit 2:1 with a good deck plate :evil2:

 

[Figit090]

thats interesting...lol.

what goes in the deck plate though? i mean, those aren't cylinder walls because there is no water jacket, soo...uh. thats weird. maybe a set of sleeves that goes down in the welded-on deckplate? more views would help but i dont want to get too off-topic.

 

[Tire Shredder]

alan, any pics of your drysump setup? where did you mount the tank?

 

[DEFIANT 7M]

alan, any pics of your drysump setup? where did you mount the tank?

Not yet, I had to buy a smaller tank. The 5 gallon tank is just a monster and ridiculously heavy full.

 

[cuel]

Do your pistons have 3 compression rings? Might just be the pics., but it looks like there's three grooves for comp. rings, and one oil ring groove. Curious, as I haven't seen a piston with a ring set-up like that before.

 

[MrWOT]

The groove between the first and second compression ring is to catch blow by to prevent the rings from unseating

 

[cuel]

Ahh, thanks.