The Sexy Grandma 15 day build

[PharmEcis]

Oh and you keep talking about how this head flowed or that one flowed. Did you actually put them on a flow bench to find out concrete data?

 

[Slippi84]

Oh and you keep talking about how this head flowed or that one flowed. Did you actually put them on a flow bench to find out concrete data?

What for? He has them on a car which is the constant in the equation. If you put x head on a car and y head on a car and you give proper cool down and don't mess with the tune it's safe to say that if you make more whp with x head then x head flows more than y head. By the way Shep ran 9's with his 272's before changing them

 

[fst91dsm]

You do realize that the size of the port doesn't dictate how well it flows right? Going bigger doesn't mean that it's better. Also, knife edging the exhaust divider in the head is just plain stupid. When you knife edge it, it becomes more prone to cracking and having the divider come apart at the edge. That means pieces of aluminum get to go through your turbo. Been there, done that.

I've seen these heads pick up more flow from just a very good valve job versus hogging the ports out. These heads really need an awesome valve job, bowl work and combustion chamber work. The ports themselves need some work, but should DEFINITELY not be where you are focusing most of your interest and work. They really just need a clean up.

For a drag car, you should be running at least 280s if not bigger in regards to cams. I bet most of your "felt" loss of power at the upper RPM band is due to your cam choice, especially if they are HKS 272s which really aren't that good.

Your kidding right? Think about it this way next time you say something like port size dosnt matter or effect the flow of a head. With the intake ports hogged out and the exhust ports "stock" where do you expect the rest of the air forced into your motor to go? What goes in must come out somehow. Thats just the way it is. Plus the Polk head has more time into those areas that you mentioned, the SBR head still looks stock asides from the intake ports. And the price tag.

 

[evo9mrtt]

I dont know if this maybe has anything to do with the loss in torque, but usually big turbo's such as the 42r's and such put down larger numbers when their under load correct? Is it maybe because the dyno your using is only registering from only the front wheels? Is it possible that if the or a dyno was reading power and pulling load from all 4 wheels it would put down and or bigger numbers? out of curriosity? And by the way the car is very impressive!!!! Keep up the good work!!!

 

[fst91dsm]

I dont know if this maybe has anything to do with the loss in torque, but usually big turbo's such as the 42r's and such put down larger numbers when their under load correct? Is it maybe because the dyno your using is only registering from only the front wheels? Is it possible that if the or a dyno was reading power and pulling load from all 4 wheels it would put down and or bigger numbers? out of curriosity? And by the way the car is very impressive!!!! Keep up the good work!!!

The load is still the same, it would make a little less power because of the drivetrain loss however.

 

[onlyhonestone]

ok i'm just curious, dude how can u afford all of this and what do u do for a living, i mean i know all of your mods aren't cheap, i would love to have my car go 9's all day but i have bills to pay first, anyway good lookin put together...

 

[xi Talon ix]

ok i'm just curious, dude how can u afford all of this and what do u do for a living, i mean i know all of your mods aren't cheap, i would love to have my car go 9's all day but i have bills to pay first, anyway good lookin put together...

the names alex, buy you can call him sir sponsors help a good deal with parts but you have to start somewhere. this car wasnt just an overnight happening.

 

[fst91dsm]

the names alex, buy you can call him sir sponsors help a good deal with parts but you have to start somewhere. this car wasnt just an overnight happening.

, no sir is needed, Alex is fine. I work at KAIZENSPEED. As far as sponsors go I dont have any as of now. Its kind of hard to grab them when the car hasnt been down the track this year. Sponsors want to see results first then comes the help.

 

[d landa]

You do realize that the size of the port doesn't dictate how well it flows right? Going bigger doesn't mean that it's better. Also, knife edging the exhaust divider in the head is just plain stupid. When you knife edge it, it becomes more prone to cracking and having the divider come apart at the edge. That means pieces of aluminum get to go through your turbo. Been there, done that.

I've seen these heads pick up more flow from just a very good valve job versus hogging the ports out. These heads really need an awesome valve job, bowl work and combustion chamber work. The ports themselves need some work, but should DEFINITELY not be where you are focusing most of your interest and work. They really just need a clean up.

Yup this is true.The ports in a 1g head are aleady huge as it is.

 

[onlyhonestone]

with all due respect xi Talon ix, i was talking to the kat that owns the car, not you, and i dont call anybody "sir"unless i want to, understand this, he's got an awesome ride, but that does'nt give him status for some guy to answer for him, thanks fst91dsm, i appreciate "your" response, now i understand how "u" can have an awesome ride, very cool.....

 

[Slippi84]

You get a chance to throw her back on the dyno and mess with teh a/f and swap smim and cams?

 

[fst91dsm]

You get a chance to throw her back on the dyno and mess with teh a/f and swap smim and cams?

Not yet, JM Fab shipped my new IM today and we should see it middle of next week. Then she will be back on the dyno and we can mess with her some more.

 

[mononctsi]

I've been following this thread for quite a while. From the pictures, the car looks like it's very well done. Hope you fix all your issues soon. Good luck with it!

 

[fst91dsm]

I've been following this thread for quite a while. From the pictures, the car looks like it's very well done. Hope you fix all your issues soon. Good luck with it!

Thank you. Hopefully by the end of this next week we will have some very good news.

 

[HighPsi91]

Just wanted to say.. very nice build! I like your choices and layout alot.

Looking at your graphs, I really wouldnt be too worried. With the intake/cam combo you were running and considering the type of dyno your numbers look right. I think once you start upping the boost the power will start to fall into place. The JMfab manifold should help a bit. I would definitely throw those 280s in there, but even they are a bit smallish for a 4202 car.

Getting a car of this degree up and running is no easy task.. I know I have been through many many various configurations over the past 2 years trying to get my 4202 car perfected. I have wanted to quit and sell it countless times.

 

[fst91dsm]

I put the car on the scale today just because I was curious... 2610 with me in it, im 160. So not too bad, thats the only updates for now but more will follow this week.

 

[cblrd]

do you know of any dynos in omaha nebraska

 

[hpexperts]

quick question, why 280 cams and not 288, or a custom grind? don't you think 280 are too small for your setup? i know bigger is not always better, correct me if i am wrong but i think with the setup you are running a custom grind is the only way you are going to reach your engines highest potential. other than that keep us posted.

 

[fst91dsm]

do you know of any dynos in omaha nebraska

Dynosport Telephone: 402-475-7223
5735 Johanna Road Suite D
Lincoln, NE 68507
Email: [email protected]
Website: Dynosport - High Performance Center

C&S Motorsports
11308 South 152nd St.
Omaha, NE 68138
(402) 896-8199

Induction Motorsports
14825 Queens Drive
Omaha, NE 68116
(402) 571-5698

I know Lincoln is a little ways away for Omaha, but C&S or Induction are your best bets. Either of the 3 Dynos will work just fine.

 

[fst91dsm]

quick question, why 280 cams and not 288, or a custom grind? don't you think 280 are too small for your setup? i know bigger is not always better, correct me if i am wrong but i think with the setup you are running a custom grind is the only way you are going to reach your engines highest potential. other than that keep us posted.

I was just thinking about that today as a matter of fact. When I ordered the 280's the goals for the car we alot less lofty as they are now. As most projects go, mine turned into something bigger and bigger. Were going to see how the 280's do and Im sure they will be upgraded again and again in the future. Plus Im buying a house right now so the pocket book is looking really dry as of late.

 

[asd_gst]

I was just thinking about that today as a matter of fact. When I ordered the 280's the goals for the car we alot less lofty as they are now. As most projects go, mine turned into something bigger and bigger. Were going to see how the 280's do and Im sure they will be upgraded again and again in the future. Plus Im buying a house right now so the pocket book is looking really dry as of late.

well good luck with buying the house, but i'd like to see how your car will do with the 280s

 

[fst91dsm]

well good luck with buying the house, but i'd like to see how your car will do with the 280s

For sure, the Intake Manifold will get to me on Friday and then the fun should begin. Most likely there wont be any numbers until next week some time. Were also going to piut the car on a local DynoJet to see how the numbers differ from ours after shes all dialed in.

 

[hpexperts]

cant waite to see the results.

 

[asd_gst]

For sure, the Intake Manifold will get to me on Friday and then the fun should begin. Most likely there wont be any numbers until next week some time. Were also going to piut the car on a local DynoJet to see how the numbers differ from ours after shes all dialed in.

what made you chose the bc 280's? and how much do they need to be degreed in

 

[marcmsj]

what made you chose the bc 280's? and how much do they need to be degreed in

I have the same cams, they're degreed to 106 as per Brian Crower.