maharajamd

iTrader: (1)

Must have a helluva job, no girlfriend, live at home, or all of the above. Lol

Good shit man!

gerzand

iTrader: (3)

Yeah the first 2 are on point Might as well do it while i can

Hitman619

looking good man
keep up the good work

FCVadi

iTrader: (3)

dude, I was on Canton this past weekend for a wedding! would have loved to seen the mad science project

it looks great man, very inspiring

maharajamd

iTrader: (1)

Can't blame ya!

yungone501

iTrader: (4)

"Blap blip blip blap blip blip blap..."

...says the cams that call this engine their humble abode.

Atlas.46

Thought you had the bottom end built... didn't know you only had ARPs. And you have been spraying it this whole time.

gerzand

iTrader: (3)

You probably thought that because I instragram'd pics of the Piistons and Rods awhile ago Yep, its been great

Atlas.46

Hmm.. wondering now if I should spray or not on my j30... 50-100 shot hmm.

But first I got to finishy ecu conversion

HQTL6SPD

Gerz, is this on the road yet?

We NEED videos!!

maharajamd

iTrader: (1)

Lol. Just grab some lotion, a box of tissues, and youtube search 'gerzand'.

twigglius

iTrader: (6)

Damn and I was in Canton for a wedding on HOF weekend.

gerzand

iTrader: (3)

It's hard for me to drive and record/aim. I should have never sold the goPro.

An couple azine members are stopping by this weekend. I heard one has a nice camera

JJH

iTrader: (1)

I had the opportunity to not only see and hear Andy's car this weekend but to DRIVE it . Not only does it sound awesome, the power is incredible. I don't even think i got into VTEC in his car but it still pulls wayyyy harder than mine (obviously). Andy is a J Series pioneer. The nitrous pull he took me on was completely exhilarating!

Slpr04UA6

^No Videos?


Sounds like Fun!

Atlas.46

this

JJH

iTrader: (1)

I was too busy holding on for my life

fsttyms1

Well ive got my full 3.7 rotating assembly in, now for the heads. Trying to debate if i keep the j32A2 heads or go with J35a8s.

JJH

iTrader: (1)

Are those rods from the 3.7? Looks like a significantly improved design over the 3.5s.

maharajamd

iTrader: (1)

How does the A2 flow compared to the A8?

A3s ported flow about the same as the A8s, right?

gerzand

iTrader: (3)

The intake side is about identical @ 300-310CFM with hand porting by comparing 2 shops work. The A2 exhaust side (obviously) has benefits, but I dont have hard numbers there, because this little shop in Georgia ahem *KMS* ahem wont respond to my emails and give me the flow datasheet I paid for. Someone want to haggle him for me? John Kauffman is the name.

maharajamd

iTrader: (1)

Haha, Andy's finally dropping some names.

You should have your headers replicated. Where do they end and meet with the exhaust? Where the stock cats normally do or did you wrap them under a bit more?

gerzand

iTrader: (3)

They meet right at the oil pan mating surface. There is 1/8" clearance between the subframe and the front header 3" v-band clamp so they're super tight to install. They have a significantly longer merge than any other headers and stiff 75a motor mounts are necessary. I'd classify them as mid length. Long tube headers on an A2 head swap aren't possible in this car due to the motor mount placement and the need to remove the motor if you wanted that sort of setup on this chassis

maharajamd

iTrader: (1)

Great info man. Thanks!

I hate cars

Good luck with that. The one time someone withheld flow numbers that I paid for I was told that they were lost. When I demanded my money back he said he found them. The second I looked at them I knew they were stock flow numbers he copied from the manual. I use the head and intake numbers to match up each injector to a specific cylinder. I had to pull the heads off and have them flowed again. I have a feeling yours didn't get flowed. I can't think of any other reason to blow you off, especially since this is a fairly high profile build and has the potential to be one of the highest output J series out there. There's a lot of potential exposure and it can be either positive or negative with them.

gerzand

iTrader: (3)

Well if so this will be the second time I've gotten lied to by separate shops. He did provide some software screenshots while flowing but no hard numbers, such as mid lift cfms on intake or exhaust at ALL. I'll be calling my bank today. The work looked good...and I took before and after measurements throughout the ports but the fact is I need the numbers.

I hate cars

They probably are improved. The 3.7 gets into some pretty insane piston speeds. I wish Honda would come out with a new block that allowed a larger bore and shorter stroke. At 7,200rpm the J37 has a mean piston speed of 23m/sec while the J32 is only at 20.6m/sec. Are all of these rods the same length/interchangeable?

I hate cars

I hope it works out, especially with the potential heavy nitrous use. I'm jealous, your ported stock heads flow more than my aftermarket and ported heads. It's going to be pretty crazy once you add some boost. Has anyone ever found the limit of the J series block?

gerzand

iTrader: (3)

They are interchangable as long as youre using the necessary matched (displacement not P/N) crank as well. This is because all rod lengths are different j30 vs j32 vs j35 vs j37.

Yes, a j32a2 swapped turbo civic on stock internals put down 700whp for 30 pulls at the strip before throwing a rod. His thread is over at j32a. He ended up just swapping another junkyard motor in for likely $500-1000 and is is running again I believe.

fsttyms1

Wasn't it due to the valve springs? I thought it was from pushing the rev limit past 7200?

fsttyms1

Crank, rods, pistons all from the j37 in the j35a3 block

KN_TL

iTrader: (3)

Those are all stock components? Are the rods and pistons forged if stock?

Does that mean C/R is still 11:1?

What are your plans (NA or FI)

JJH

iTrader: (1)

Yes, for weight lightening though - not for added strength ^

fsttyms1

All OEM products. ? some claim they are

No, i decked the block .006 and CR will be between 11.4:1 and 11.7:1 depending on the head gasket i use.

NA

fsttyms1

The connecting rod large end bore is different between the 3.7 and the 3.2-3.5 (60mm vs 58) That is the only reason when using the 3.7 crank you have to use the 3.7 rods. Pistons are all interchangeable (in the 89mm bore engine)

gerzand

iTrader: (3)

Yes, and thus the overall length as well. Otherwise youd be higher than TDC for any given cylinder

J30 = 162mm
J32 = 161.8mm
J35 = 158.5mm
J37 = 155.5mm

gerzand

iTrader: (3)

This isnt the case with the J37A4. They are made with strengh in mind, and by a well known company.

Ilovemyvtx

A lot of great info and a badass build.

I hate cars

Lol. You would end up with diesel-like compression.

It's too bad they didn't use the piston pin height to make up the difference and not the rods. So ideally J30 rods with custom pistons would be the best choice if they were as strong as the J37 which I assume they aren't.

I just don't know what Honda is doing. Usually you want a better rod to stroke ratio and especially for high revving engines you want an oversquare, not an undersquare engine. The only thing I can think of is emissions. Less top ring area to trap unburned or partially burned hydrocarbons. They obviously recognized the piston speed was getting up there with the long stroke, judging by the fairly beefy rods.

Does anyone know where you can get some inside info on the J series, I want to know the reasoning behind the undersquare design and short rod/long stroke.

JJH

iTrader: (1)

Cool, just going by what I read but that wasn't based on any hard facts.

I wonder why more people aren't using forged 3.7 crank/rods for boosted applications with the lower compression and all. Seems like a cheaper and more reliable route. Or am I off here?