Register    Login    Forum    Search    FAQ


Board index » TECHNICAL » Power Adders




Post new topic Reply to topic  [ 17 posts ]  Go to page 1, 2  Next
Author Message
 Post Posted: Wed Nov 30, 2011 9:16 pm 
Offline
Frequent Racer
User avatar

Joined: Sun Dec 13, 2009 1:02 pm
Posts: 433
Location: Matawan,NJ
I'm no expert on anything but I'm no dummy either. I only sprayed the car once for the first time this past sunday with 150. It was totally shocking and caught me off guard how fast the rpm's shot up. I always ran just motor til sunday. Anyway...I left my rev limiter @ 6700. It ran 11.14 @ 114 coasting through the traps after I let off. I have 3.90 gears with 28" MT ET DRs. I had to let off at 1000' cause I was on the rev limiter already. I normal run mid 11's on motor going through the traps @ 5800rpm. On motor I need more rear gear, but on nitrous I was way over what I expected the rpms to be.
What do you guys think the final rpm would be If I ran it til the end on spray? I dont have a high winding motor but I dont have crap internals either. I'm not looking to blew it up. ](*,)

_________________
Just your typical 11 second 305ci smallblock.... Yeah Right!! LOL


Top 
 Profile  
 
 Post Posted: Thu Dec 01, 2011 9:56 am 
Offline
Top Fueler
User avatar

Joined: Thu Feb 21, 2008 12:35 pm
Posts: 3298
Location: Ontario, Canada
i think it's time to up the rev limiter and give 'er! probably not the same...but in case it helps....i was worried to run my car past 6000 rpm, so i was letting off (holding it to 6,000 rpm) around the 1000' mark as well. i eventuall got sick of that and just kept in it. the car goes through the traps at around 6200-6300. i'm not spraying it or anything, so i'm sure there's a bit of a difference. i'd guess that you'd be crossing around 7,000 rpm.


Top 
 Profile  
 
 Post Posted: Thu Dec 01, 2011 4:57 pm 
Offline
Frequent Racer
User avatar

Joined: Sun Dec 13, 2009 1:02 pm
Posts: 433
Location: Matawan,NJ
I have and Eagle 4340 nitrided crank, SRP Pistons and Eagle I beam rods (the weakpoint). I'm not to comfortable spinning it to 7000-7200. But hey I shift it at 6500 constantly, it might be fine. so I might go back Sunday and try it again for the last time this year. Raise the limiter to What??

_________________
Just your typical 11 second 305ci smallblock.... Yeah Right!! LOL


Top 
 Profile  
 
 Post Posted: Sat Dec 17, 2011 2:28 pm 
Offline
Frequent Racer
User avatar

Joined: Mon Oct 05, 2009 12:40 am
Posts: 623
Location: north judson indiana
I have run mine at 6900 with stock crank and rods fitted with arp bolts.Not saying its a smart thing to do but mines run forever like that.I know guys running circle track motors spinning them to 6700 all night on stock componentsin the bottom end.

_________________
81 Malibu,6.0 unported heads stock bottom end vic jr. intake quick fuel carb on 125 shot. Best of 10.75 124 mph


Top 
 Profile  
 
 Post Posted: Sat Dec 17, 2011 5:25 pm 
Offline
Pro Stocker
User avatar

Joined: Fri Mar 19, 2004 2:27 am
Posts: 2014
Location: Summerville, SC
tighter converter. what do you currently run?

_________________
Image


1.51 60ft
10.89 @121.33
461 N/A pump gas

1.45 60ft
6.11 @115
9.74@140
461 with a Novi 2000 on E-85

Thanks to Ultimate Speed and Machine


Top 
 Profile  
 
 Post Posted: Mon Dec 19, 2011 2:22 pm 
Offline
Amateur Racer

Joined: Fri Aug 08, 2008 9:40 am
Posts: 247
Location: Mastic, New York 11950
First time on spray... fun huh? R's come up quick for sure. Before you get too busy did you read the plugs after the run? Did you run the "right" plugs for nitrous? (non projected nose with a short ground strap ((Autolite AR 134's are good starting point))) The plugs will tell you everything you need to know about "what to expect". The heat mark will get your timing right, coloring (or lack of it) will guide you for jets.(in the plate) This is assuming that you were "on the money" when you were on motor. Once you are sure it is "happy", run it out. I don't imagine it is going to rev much more , unless you have a really loose converter like 454 rat suggested.

_________________
Recycle Racing. Running good with old stuff no one else wanted.


Top 
 Profile  
 
 Post Posted: Mon Dec 19, 2011 8:48 pm 
Offline
Frequent Racer
User avatar

Joined: Sun Dec 13, 2009 1:02 pm
Posts: 433
Location: Matawan,NJ
No i didn't read the plugs. I always ran the AR plugs. It was a lot of fun!! I did get to the track again on Dec 4. I raised the limiter to 7200 It ran 10.89 @ 129 mph when I hit the arm switch in second gear and it kicked in it was GONE !! LOL Through the traps the rpm was about 7000.

_________________
Just your typical 11 second 305ci smallblock.... Yeah Right!! LOL


Top 
 Profile  
 
 Post Posted: Tue Dec 20, 2011 7:59 am 
Offline
Top Fueler
User avatar

Joined: Wed Feb 17, 2010 6:57 pm
Posts: 3080
Location: Milwaukee, WI
Sounds like you had a blast.. I'd be scared to death running my engine up that high, but if it's built for it, then ...should be no biggie....

_________________
2015 Chevrolet Volt
2005 Lexus LS430
1980 Malibu Classic


Top 
 Profile  
 
 Post Posted: Tue Dec 20, 2011 8:50 am 
Offline
Amateur Racer

Joined: Fri Aug 08, 2008 9:40 am
Posts: 247
Location: Mastic, New York 11950
Nitrous is one of those things that until you try it, it is overwhelming. Once you figure out the basics (covered in the instructions that come with the kit) you can tune it fairly easy. See here:
http://youtu.be/EAuAuIhRQd4
Brown_Gbody, I hit a stock 350 with a 100 shot pretty regular, on a very safe tune up. With 3.73's it stays below 6,000 rpm on 28's. So, come on over!

_________________
Recycle Racing. Running good with old stuff no one else wanted.


Top 
 Profile  
 
 Post Posted: Wed Dec 21, 2011 9:32 pm 
Offline
Frequent Racer
User avatar

Joined: Fri Jan 08, 2010 3:38 pm
Posts: 432
Location: Grove Oak, AL
art wrote:
, I hit a stock 350 with a 100 shot pretty regular, on a very safe tune up.
I used to blow 250 on a stock bottom end 400 small block. Like any power adder, it is in the tune. When you get too greedy, it can...or will go boom.

_________________
79 Malibu, 355cid, stock block and crankshaft, iron heads, Bullet cam, CSU E-85 blow thru, TH400 w PTC converter, BTE brake, Astro Van driveshaft, 10 bolt, 3.08 gears, 3680 lbs:
6.20@114 mph, 1.46 60'
9.70@143 mph, 1.54 60'

'86 Oldsmobile Cutlass Salon 442 - 10.35 @ 68
'70 Cutlass S - 25k miles bone stock
'70 Cutlass S - high compression 350 SBO, Crane 280 cam, 425 heads, 3.90 gears


Don't ask me...people keep telling me I'm doing it wrong.


Top 
 Profile  
 
 Post Posted: Thu Dec 22, 2011 12:31 pm 
Offline
Amateur Racer

Joined: Fri Aug 08, 2008 9:40 am
Posts: 247
Location: Mastic, New York 11950
Bad Medicine Racing wrote:
art wrote:
, I hit a stock 350 with a 100 shot pretty regular, on a very safe tune up.
I used to blow 250 on a stock bottom end 400 small block. Like any power adder, it is in the tune. When you get too greedy, it can...or will go boom.

On stock pistons? That's bold.

_________________
Recycle Racing. Running good with old stuff no one else wanted.


Top 
 Profile  
 
 Post Posted: Thu Dec 22, 2011 7:25 pm 
Offline
Frequent Racer
User avatar

Joined: Fri Jan 08, 2010 3:38 pm
Posts: 432
Location: Grove Oak, AL
art wrote:
On stock pistons? That's bold.
They were aftermarket cast 0.030 over. Don't have a clue on the brand. Very deep dishes, with stock 5.565 rods, stock rod bolts, and stock crankshaft. After using 250 for a while, I put a Weiand 142 on it, and popped a head gasket shooting a 50 shot with 6psi. It only got a piston when the MSD went out at the top of high gear with boost only. After that it went to a 377 with forged rods and pistons.

I like to see how much I can do that others tell me can't be done.

_________________
79 Malibu, 355cid, stock block and crankshaft, iron heads, Bullet cam, CSU E-85 blow thru, TH400 w PTC converter, BTE brake, Astro Van driveshaft, 10 bolt, 3.08 gears, 3680 lbs:
6.20@114 mph, 1.46 60'
9.70@143 mph, 1.54 60'

'86 Oldsmobile Cutlass Salon 442 - 10.35 @ 68
'70 Cutlass S - 25k miles bone stock
'70 Cutlass S - high compression 350 SBO, Crane 280 cam, 425 heads, 3.90 gears


Don't ask me...people keep telling me I'm doing it wrong.


Top 
 Profile  
 
 Post Posted: Fri Dec 23, 2011 9:33 am 
Offline
Amateur Racer

Joined: Fri Aug 08, 2008 9:40 am
Posts: 247
Location: Mastic, New York 11950
Bad Medicine Racing wrote:
I like to see how much I can do that others tell me can't be done.

Me too. I'm always looking at stuff that others say "won't work".

_________________
Recycle Racing. Running good with old stuff no one else wanted.


Top 
 Profile  
 
 Post Posted: Sat Jan 14, 2012 8:18 pm 
Offline

Joined: Sat Jan 10, 2009 11:18 am
Posts: 6
Location: Hillsdale,MI
I sprayed my old bu with a 200 shot all the time :mrgreen: stock internal worn out 350 lol it ran 12.40s with a slipping trans,stock stall,and a 600 cfm carb


Top 
 Profile  
 
 Post Posted: Sat Nov 24, 2012 11:48 am 
Offline
Frequent Racer
User avatar

Joined: Sun Dec 13, 2009 1:02 pm
Posts: 433
Location: Matawan,NJ
After a few more runs on 100hp shot. And the 150 shot the first time I used it , I went to Atco for Black Friday tnt. Made 2 motor passes to make sure everything was ok. Last pass hit it with 150. It went 10.42 @ 130.17 mph.

_________________
Just your typical 11 second 305ci smallblock.... Yeah Right!! LOL


Top 
 Profile  
 
Display posts from previous:  Sort by  
 
Post new topic Reply to topic  [ 17 posts ]  Go to page 1, 2  Next

Board index » TECHNICAL » Power Adders


Who is online

Users browsing this forum: No registered users and 1 guest

 
 

 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron