460hp, 450 tg. , dyno jet . inline walbro, intank walbro, 272 bc, 1200cc pte. 30psi greddy ebc profec. full boltons.os housing,tbe. turbo sx frontmount. hks bov. 18psi fp wastewaste. e85 fuel. new fp red 80mm surge compressor. full 30psi boost at 4000rpm. no spike or drop off. 15 degree advance timing. stock fuel rail. one fast ride. tuned at battlground in atlanta , georgia. easy 11 second 1/4 mile. should be in the 9s with fully build 2.3 engine & trans, clutches.

 

This was at 30psi?

 

yes sir. 30psi. with arp head studs. air fuel ratio is right around 12. could go up 35psi and could be 500hp. but boost cut set at 32. and doesn't want to break the rod bolt. stock rod bolt on evo 8 is not safe over 450torgue.

 

Rod bolts aren't what you have to worry about at 450 ft lbs, its folding the whole rod and ejecting it through the block. Safe limit in my experience is 410-425. I ran my car at 400 ft lbs for over 49k so I know thats safe. That was with stock rod bolts and frequent trips to 8500.

The thing I find interesting is we made 480 on the stock intake manifold and a MAF, and 500 with SD at the same boost level with about the same timing. Are the cams degreed or did you throw them in with stock gears. Also is the BC, buddy club or Brian Crower?

9's with that turbo is going to be a little tougher than just dropping a new motor in. Its going to have to have alot of weight out of it and pretty much max the turbo (560-570 on a DJ).

 

+1

I know from experience

 

Have you tried using ECU based boost control to up the boost in thigher rpm ranges to maintain 400tq all the way to 8500? I am using an sc61 on my evo and have a spare 3port solenoid and was thinking that ramping the boost up as the efficiency of the motor goes down on the top end could end up giving a nice flat tq curve and linear power delivery. It is almost exactly the opposite of what 90% of the people experience with smaller turbos spiking to crazy tq #'s then dropping boost up top and a flat powerband with tq dropping like a rock. Theoretically holding only 400tq to 8K would give 600whp without a lot of stress on the motor. I have less aggressive HKS 272 cams and dont think going alot above 8K will be beneficial along with stock springs/retainers.

 

This thread needs more dynosheet (it's a requirement)

 

272s brian crower. stock timing gear. i think if i put adjustable gears and kelford 272s, might be another 20hp. Oh yeah, mine intake & exhaust manifold, throttle body are stock. Just had the works tb shaft seals in there.

 

to gst motorsport. got a dyno sheet , but not sure how to put in here. You can google it by type in e85 evo 8. my car and dyno sheet are in the battground motorsport website. It will be under " Battlground tuned e85 evo 8" . thanks.

 

I think you'll find the cams by themselves will be 20whp. The car I referenced was stock intake and exhaust at the time and a 65mm TB. We didnt do 100% back to back so I am not sure what the TB was worth but I would imagine 8-10whp.

To Batty-

Thats how we have always done our Hondas, both for traction and the sake of the sleeves. We are going to experiment with the 3 port and ECU boost for exactly that reason but customer stuff comes first before our own testing sometimes. Our test car must almost be your cars twin, it is an 05 with an SC61 and HKS272s on stock ECU SD.

The reason my car made 575whp reliably was I doing the same thing with boost more or less and keeping the torque as flat as possible. The power can only do one thing, ramp up past 5250.

 

i second that

 

Please PM me a link to that dynosheet hosted on the web, and I'll place it in your original post so you're within the forum guidelines. When I get the image, I'll unlock the thread.

 

+10000!!! lol!

stock rod bolts stretched and caused issues for me at just 430ftlbs of torque (550-570whp). Spinning to 8500rpm didnt help either... i swapped to ARP rod bolts but by then i think the big ends were already untrue and shouldve been re-sized. End result... major rod knock. John Bradley is 100% CORRECT... dont go over low 400s in torque if you wanna stay stock block!