RX7UP

Car looks great... Would love to see some videos at the track in action.

bewtew

iTrader: (7)

Look at Jesus!

the Car looks great david! what exhaust are you running? it's very quiet..

KKMpunkrock2011

iTrader: (5)

dear god look at those steam rollers!! what size are those?

such a good looking car.

BridgePorted12A

iTrader: (6)

Congrats David!!! Car looks and sounds awesome! Now fix the wastegate issue and shoot for 600rwhp+ on pump

Badass car. If you let me take it for a spin at DGRR again, I'll probably ask you to turn down the boost

Ryan

David Hayes

iTrader: (6)

It's the Magnaflow midpipe that makes it quiet.

David Hayes

iTrader: (6)

315's. Going to replace them with 335s once these wear out.

David Hayes

iTrader: (6)

The 555 WHP is at low boost Ryan. You'll have to settle driving it like that. Bummer right?

bewtew

iTrader: (7)

Dave, What's the deal for DGRR ? do ppl meet for a caravan or what?

David Hayes

iTrader: (6)

Yes, I am trying to get a caravan together fro Orlando on up to DGRR. Check out http://rotarycarclub.com/rotary_foru...ead.php?t=9618

David Hayes

iTrader: (6)

Nothing to report but thought I'd put a plug in for Deals Gap Rotary Rally coming up in April!

Cgotto6

iTrader: (8)

The progress looks great david. Never get tired of seeing your wheel/tire combo. 555wheel at low boost is just crazy. Did he say that was under 6k too? Still breaking in the motor?

odelay3

iTrader: (3)

I've been following your progress for quite a while - enjoyed the recently posted vids.

Very impressive 7 - that is a fine *** with those flares and massive shoes to say the least...

Never noticed you rear license plate trim - WAR EAGLE! Hell of a game last week, maybe we can get it together next year and not get stomach ulcers while watching games.

David Hayes

iTrader: (6)

Thanks for the compliments. It's good to see everything finally coming together and to be close to the finish line although we know we're never really finished right?

Regarding the wheel/tire sizes, I never even thought of something like this as I was a "purist", that is until I saw a car with the Pettit flares and wide back wheels. Fell in love then and had to do it. Goodfella has talked me into replacing the tires (Michelin Pilot Sports) with new Michelin Pilot Sport 2s as the tires have been on the car for about 5 years now. They have great tread on them as I have logged only about 7,500 miles during the past 5 years, but he's convinced me the rubber is getting hard and they need to come off. So I am going to replace the fronts (18X9s with 245 40 18s) with a bit wider and lower tires (255 35 18s) and the backs (18X12.5 with 315 30 18s) with wider (335 30 18s) ones. Not sure if anyone will notice the difference but I will.

The 555WHP at 12-14 (boost didn't consistently hold) is good but the spring in the Synapse wastegate was too soft to hold consistent boost at this level or above so we couldn't turn it up anymore. We'll replace this with a stronger spring (it was left back at the shop) and redyno in a few weeks. Also note the 555 was made on a Mustang dyno which conservatively reads 10% less than the typical Dynojet so if you want to compare apples to apples then this would be about 610 WHP at this level. My goal is to hit 650 or so at 18 PSI so I am very confident this will be done once we replace the spring.

And the 6,000 RPM level is really more like 6,500 as I saw it but given boost wasn't consistent Jesus didn't want to go all the way up in the powerband until we fix the issue. The really cool thing about the dyno graph (didn't keep it as I will wait until we have a final "real" one) is WHP was a straight line up all the way through the graph, meaning the engine has plenty more HP to give before it starts to fall off. In fact, HP had just made it slightly above the torque curve in the graph.

David Hayes

iTrader: (6)

War Damn Eagle back at you! I got my undergrad degree from Auburn and I bleed orange and blue. I went to the Outback Bowl with another Auburn buddy of mine and I have to say it was the wildest game I have ever seen. Auburn was clearly the better team but Northwestern (aided by very questionable officiating IMO) is very scrappy and never gave up.

Next year is looking up for the Tigers and I will definitely make it to a game or two. Might even take the FD up for a game

bewtew

iTrader: (7)

steam rollers!

David Hayes

iTrader: (6)

Gonna crush some bugs with these!

bewtew

iTrader: (7)

hahaha

no_more_rice

David - have you weighed the car yet? Just curious....wondering how it would compare to something like a track prepped Z06

Looking forward to you bringing this beast to Asheville so I can check it out, I still have your old wheels on my car btw!

David Hayes

iTrader: (6)

Those wheels bring back memories of a simpler time! I still love the way they look.

The car should weigh in at around 2,900 lbs. A bunch of other 3 rotor guys have just weighed their cars and they have all been less than this. I guess my wider wheels and tires would add a few pounds but both the wheels and the tires are pretty light. I'll probably make it to the scales soon anyway as Jesus and were discussing corner weighing the car so we can make sure it's balance properly and the coil overs are set right.

I'll have the car up in Asheville in the next several months as the house is just about done.

no_more_rice

You likely addressed this issue on a previous page, but reportedly the stock trans can be a weak link at this level of power/torque. Have there been any issues with popping out of gear under hard throttle? Some have gone to a high strength aftermarket racing "dogbox" trans.

bewtew

iTrader: (7)

a 3 piece work meister 19x10.5 with a 285/35/19 tire weights 58.9 lb!

when i had my car corner scaled it weight 2953 with 3/4 of a tank of gas but i had my old ssr that were very light 9.5 with 245's up front and 10.5 with 275 in the rear. your car has to be in the 3000's with those steam rollers.

I'm surprise you have not had any transmission problems dave.. I've blown 2 of them so far

David Hayes

iTrader: (6)

No, I don't think it will crack the 3,000 lbs. mark but we shall see. The Forgelines are very light for their size and the Michelins will add 7 lbs per tire on the back versus a 285 for a total of 14 lbs. more. The 255 weigh 25 lbs. per tire. I'd be surprised if I have added significantly more weight than the stock car as I have removed the spare in the back and have a small battery compared to the stock one.

I haven't blown a tranny yet but I do have a new rebuilt one on the car. Did this as a precaution. When it goes I'll go your route of swapping it out for a T56.

David Hayes

iTrader: (6)

No issues yet with this but I really don't drive the car hard and as I posted, I have a new rebuilt tranny that should help some. No popping out of gear and the shifts are very smooth.

GoodfellaFD3S

iTrader: (213)

David, have you made a full throttle pull in 4th gear to 8000 rpm? Supposedly a great way to strip the teeth off the gear in a single turbo 20B

edit: I remember Carlisi was very careful in the upper gears with his setup. It was a balancing act between traction in the lower gears and keeping the driveline together in the others.

KKMpunkrock2011

iTrader: (5)

I'm curious how the t56 bolts up to the rear plate, is there a thread out there about it?

also, what you said about the dyno's isn't quite accurate. A mustang dyno is a loaded dyno that is supposed to simulate the loads that a car will experience on the street. It's not set up to read conservatively less, in fact, it's more accurate, and as most people will attest, better for tuning. and it can be anywhere from 5-25% less than a dynojet. (usually 10-20 but there have been cases of more.)

You'll probably be well above 700 hp at the motor tho. In fact you're probably over it now, figure in 15% loss on the mustang dyno and 15% drivetrain loss (average estimates) and that puts you around 720 .