RX7Club.com - Mazda RX7 Forum - Search Results

 
Search: Posts Made By: Howard Coleman CPR
Showing results 1 to 25 of 28
Search took 0.02 seconds.
06-17-19, 11:19 AM
Replies: 10
Views: 390
Posted By Howard Coleman CPR

"You're going about things in a very good manner;...

"You're going about things in a very good manner; thoughtful decisions, modest mods, asking the right questions"

i second that...

wherever possible i think "simple" wins. sure you can possibly...
06-06-19, 10:31 AM
Replies: 8
Views: 1,180
Posted By Howard Coleman CPR

"Bridgeport shifts power higher in the rpm range....

"Bridgeport shifts power higher in the rpm range. That's the opposite of your quest for no lag"

by increasing the amount of time both the intake and exhaust ports open you get intake dilution and...
04-17-19, 08:59 AM
Replies: 20
Views: 2,040
Posted By Howard Coleman CPR

"updating my setup from my gen2 6766. At first I...

"updating my setup from my gen2 6766. At first I was thinking the 9180, but the idea of quicker spool with more power under the curve is very enticing.

In theory, the 8474 seems perfect for my...
04-14-19, 08:49 AM
Replies: 20
Views: 2,040
Posted By Howard Coleman CPR

thought it might be helpful to post the SX-E...

thought it might be helpful to post the SX-E rotary rwhp

62 572
63 587
64 610
66 655
69 738
72 836
04-11-19, 11:25 AM
Replies: 22
Views: 10,079
Posted By Howard Coleman CPR

suggest interested parties might want to revisit...

suggest interested parties might want to revisit the above link as i did post the actual Turblown Stud data sheet and re-write the section a bit...
Forum: Haltech Forum
03-15-19, 06:58 PM
Replies: 10
Views: 1,225
Posted By Howard Coleman CPR

"is there any power loss associated with the 100%...

"is there any power loss associated with the 100% H20 method?"

if you are using around 500 cc of water the loss of BTUs, and therefore power, is just under 1%

the reason most want lower IATs is...
12-27-18, 10:44 AM
Replies: 23
Views: 3,405
Posted By Howard Coleman CPR

even though you posted lots of good info i can't...

even though you posted lots of good info i can't tell you which turbo to buy... however i can give you some addtl info that might be of help...

as you may know BW recently added to their already...
10-14-18, 09:50 AM
Replies: 17
Views: 1,218
Posted By Howard Coleman CPR

yes, you could enable an ignition total cut....

yes, you could enable an ignition total cut. people say it is hard on the engine however when i was running my PFC on the dyno we had a few and it had no engine effect.of course the actual enable/cut...
10-13-18, 10:34 AM
Replies: 17
Views: 1,218
Posted By Howard Coleman CPR

all of the turbo changes V the original spec are...

all of the turbo changes V the original spec are in the right direction..

it is interesting to compare the OE twins to a GT35 as it will shift the focus to the real issue.
...
02-06-18, 01:07 PM
Replies: 24
Views: 2,575
Posted By Howard Coleman CPR

HI Scott, your raise an excellent important...

HI Scott,

your raise an excellent important issue. here's coverage of the problem from my upcoming website:

"We are now close to buttoning it up. By buttoning it up we are about to clamp 5...
12-16-17, 10:01 AM
Replies: 16
Views: 2,041
Posted By Howard Coleman CPR

my view is any AI is miles better than no AI. of...

my view is any AI is miles better than no AI. of course that's not the question in this thread but i always like to get it in:)

i am not surprised by jsnow82's experience. i do believe that we all...
11-25-17, 10:43 AM
Replies: 42
Views: 12,763
Posted By Howard Coleman CPR

Alpine: power target 575 desired boost...

Alpine:
power target 575
desired boost pressure 20/23

575 rw rotary SAE is 76 pounds per minute

Edit:
adjust to use 160 cubic inch displacement

since the rotary is 160 cu inches 575 is...
11-18-17, 04:11 PM
Replies: 42
Views: 12,763
Posted By Howard Coleman CPR

"how are you determining the average sq inch area...

"how are you determining the average sq inch area compressor?"

if you read the beginning of my sticky thread "Turbo Comparisons" it is laid out...

solve for the area of the inducer, add the...
11-17-17, 10:10 AM
Replies: 42
Views: 12,763
Posted By Howard Coleman CPR

"...would benefit from larger turbine wheels" ...

"...would benefit from larger turbine wheels"

when picking a turbo size to fit your app the first item should be the flow from the compressor. match the flow to your power objective.

also near...
11-05-17, 01:24 PM
Replies: 42
Views: 12,763
Posted By Howard Coleman CPR

Borg Warner S300 SXE 62

finally able to do some initial road tuning w my SXE62 (91 back end). i have a 1.0 which i will swap in once i get all the data i need from the 91.

i am primarily interested in comparing SXE62...
09-25-17, 08:00 AM
Replies: 20
Views: 4,095
Posted By Howard Coleman CPR

brake systems do not lend well to being selected...

brake systems do not lend well to being selected based on aesthetics.

too much rear brake and you will be going backwards.

sure you can install a 4 piston in the rear but you will need to bias...
08-10-17, 08:29 AM
Replies: 4
Views: 2,075
Posted By Howard Coleman CPR

good for you for actually measuring things:) ...

good for you for actually measuring things:)

almost all used rotors show approx .006 at the ends of the apex seal grooves and around .003 center.

there are 3 fixes.*

new rotors

lightly...
Forum: 20B Forum
08-07-17, 08:42 AM
Replies: 42
Views: 7,686
Posted By Howard Coleman CPR

the P/N on the Mcleod box is: Mazda RST 9...

the P/N on the Mcleod box is:

Mazda RST 9 11/16 X1-1/8X26

http://imagizer.imageshack.us/v2/xq90/923/TRiGDy.jpg (https://imageshack.com/i/pnTRiGDyj)
07-20-17, 08:26 PM
Replies: 38
Views: 2,444
Posted By Howard Coleman CPR

here's a pic of my engine compartment w the mica...

here's a pic of my engine compartment w the mica barrier

http://imagizer.imageshack.us/v2/xq90/924/sSfgNK.jpg (https://imageshack.com/i/posSfgNKj)

ceramic coating's biggest plus is it mitigates...
07-19-17, 08:20 PM
Replies: 38
Views: 2,444
Posted By Howard Coleman CPR

"Thermal conductivity is a material property...

"Thermal conductivity is a material property describing the ability to conduct heat."

higher number =s more heat conductivity =s bad

Aluminum 205 (think LIM runners conducting heat into your...
07-03-17, 09:47 AM
Replies: 1
Views: 675
Posted By Howard Coleman CPR

229 pages of AI THREADS!

i have a 2006 sticky thread in this section re AI high value info sites. one of these sites continues to gain strength and currently features 229 pages of AI gold.

while most of us have little...
09-28-15, 08:27 AM
Replies: 100
Views: 54,211
Posted By Howard Coleman CPR

"Any word on the garrett gt-w line up. Any good?"...

"Any word on the garrett gt-w line up. Any good?"

Garrett debuted the GTW line (the "W" is for Wide as in wide compressor map according to Garrett.... wide is good) at the PRI last December.
...
04-06-14, 09:59 AM
Replies: 345
Views: 122,746
Posted By Howard Coleman CPR

airflow makes power and it may be this dyno sheet...

airflow makes power and it may be this dyno sheet that most clearly proves the point. i am always first and foremost a hp under the curve (HPUC) fan.

HPUC is what wins races and also contributes...
02-02-14, 08:52 AM
Replies: 5
Views: 17,471
Posted By Howard Coleman CPR

How To: Fuel Injector Sizing/ GASOLINE AND E85

Much of this post can be found scattered around this board but i thought it would be a good idea to put it all together and add in alternative fuels such as E85, ethanol, methanol and that non-fuel...
12-14-13, 11:01 AM
Replies: 47
Views: 12,111
Posted By Howard Coleman CPR

that is a GREAT question. if you download...

that is a GREAT question.

if you download the WinPEP 7 software and then get the FILE from your Dynojet tuner rather than a dyno sheet and look at the boost data V power you will quickly see that...
Showing results 1 to 25 of 28
 


 
Forum Jump

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.