- -
UserInfo

Welcome Anonymous




Membership:
Latest: Micks66
New Today: 0
New Yesterday: 0
Overall: 896

People Online:
Members: 1
Visitors: 1
Bots: 13
Total: 15
Who Is Where:
Members:
Visitors:
01. Forums
 Bots:
01. Forums
02. CPGNuCalendar
03. My Account
04. Photo Gallery
05. Forums
06. CPGNuCalendar
07. Forums
08. Forums
09. CPGNuCalendar
10. CPGNuCalendar
11. Home
12. Forums
13. Forums
Hidden: 1
Staff Online:

No staff members are online!
We have received
34267818
page views since
July 27, 2010

Hits New Today: 15813
Hits New Yesterday: 18078

Server Time
20 January 2018 19:52:55 AEDT (GMT +11)
Q&A > General Tech Advice > Motor build, opinions please. > Community Forums > Mustang Forum Australia - Mustang Tech

View posts since last visit ā€¢ View posts last 24 hours ā€¢ View unanswered posts
Forum Index > General Tech Advice

Motor build, opinions please. Reply to topic

Go to page 1, 2, 3, 4, 5, 6, 7 ā€¦ 13, 14, 15 Next
Author Message
nassi
Mustang King

Offline
Joined: Aug 01, 2010
Posts: 6429
Location: Perth

0 šŸ‘ / 0 šŸ‘Ž


I have taken delivery of a NOS AUIII XR8 roller block and rotating assy.
I'd like opinions on head and cam combo's. This motor will end up in my convertible so wont be a race car, may do a few passes at the strip once a year but thats all.
I'll probably retain about 3:1 diff ratio and the trans is a C4.
Staying with a carb.
Thanks for any input.
cheers


View user's profilePhoto Gallery
JC074
Mustang Star

Offline
Joined: Aug 26, 2010
Posts: 918
Location: Perth

0 šŸ‘ / 0 šŸ‘Ž


Ill take ur old donk if u dont want it Nassi Smile


Im Back!

View user's profile
boofhead
Mustang King

Offline
Joined: Nov 02, 2010
Posts: 4501
Location: Brisbane

0 šŸ‘ / 0 šŸ‘Ž


You will get many opinions though below is what I would do;

Assuming your leaving it as a 302

Heads: There are many options and many brands a quite good though for a number of reasons I have a preference for the TW heads. For a 302:

www.summitracing.com/p...-51400002/

Cam: Harder choice though given your 3:1 ratio. So somewhere toward/around the 220 @ 50 thou lift (Maybe a little more on exhaust).

One option:

www.summitracing.com/p...-51403001/

Second option:

www.summitracing.com/p...-51014LUN/

Third option (which I think is the best option):

www.summitracing.com/p...-35-349-8/

a bit more go

www.summitracing.com/p...-35-351-8/


You will need many other bits e.g. gaskets, molly pushrods, roller rockers etc so better again might be a top end kit


I will someday think of something clever to say.

View user's profile
Cameron
Mustang Star

Offline
Joined: Aug 23, 2010
Posts: 332

0 šŸ‘ / 0 šŸ‘Ž


Someone is selling a whole bunch of go fast bits for that motor on gumtree at the moment. Not a site i usually frequent - but i was having a gander at work today at, well, just random crap.

But Nassi - your old motor certainly looked the part and didnt it take you all the way to adelaide? So it was reliable. Why the change mate?


View user's profileSend e-mailPhoto Gallery
nassi
Mustang King

Offline
Joined: Aug 01, 2010
Posts: 6429
Location: Perth

0 šŸ‘ / 0 šŸ‘Ž


JC074 wrote
Ill take ur old donk if u dont want it Nassi Smile


Sorry Jase, not for sale. Very Happy


View user's profilePhoto Gallery
nassi
Mustang King

Offline
Joined: Aug 01, 2010
Posts: 6429
Location: Perth

0 šŸ‘ / 0 šŸ‘Ž


Thanks Boofhead, thats the sort of info I need. I've looked at some packages but always have questions. I guess I now have somwhere to get them answered.

and yes standard stroke
cheers


Last edited by nassi on Thu Mar 29, 2012 10:55 am; edited 1 time in total

View user's profilePhoto Gallery
nassi
Mustang King

Offline
Joined: Aug 01, 2010
Posts: 6429
Location: Perth

0 šŸ‘ / 0 šŸ‘Ž


Cameron wrote
Someone is selling a whole bunch of go fast bits for that motor on gumtree at the moment. Not a site i usually frequent - but i was having a gander at work today at, well, just random crap.

But Nassi - your old motor certainly looked the part and didnt it take you all the way to adelaide? So it was reliable. Why the change mate?


Thanks Cam, the old motor is fine and will probably find its way into another project... if and when.
The new motor is just something I want to do............ and I didnt want to do it with someone elses hand me downs Very Happy
cheers.


View user's profilePhoto Gallery
Jethro
Baby Mustang

Offline
Joined: Jan 25, 2012
Posts: 8
Location: Moranbah

0 šŸ‘ / 0 šŸ‘Ž


Doesn't the au3 motor already have the explorer manifold and GT40P heads???
If you wanted to spend as little as possible some 1.7 roller rockers and decent headers should see you up around 200kw (270hp), though headers may be and issue on the p heads???


View user's profile
S[_]SPECT
Mustang Maniac

Offline
Joined: Jul 28, 2010
Posts: 1259
Location: WILD WEST - SOR

0 šŸ‘ / 0 šŸ‘Ž


Is only a shortblock.. no heads and manifold..

nassi, what do you have in the way of front acessories?

Balancer there ? Timing cover (assuming no gear as no cam)
I've not seen an AU3 block, but given it uses coilpacks, is the cam sensor hole the same size as normal for dizzy?
Std timing cover would have no provision for mech fuel pump..
Std water pump would have inlet on other side.


Cheers,
Birchy...
Dodgy Bros. Customs

Suspect 67 - www.mustangtech.com.au.../t=52.html

View user's profilePhoto Gallery
nassi
Mustang King

Offline
Joined: Aug 01, 2010
Posts: 6429
Location: Perth

0 šŸ‘ / 0 šŸ‘Ž


Hi Birchy, no front end. In fact lets just call it a short, short block. Very Happy
All I have is the block, crank, rods and pistons as assembled by Ford/Tickford.
So in some ways a clean canvas.
I've yet to check all the orifice. Thats a Saturday job I hope.
cheers


View user's profilePhoto Gallery
boofhead
Mustang King

Offline
Joined: Nov 02, 2010
Posts: 4501
Location: Brisbane

0 šŸ‘ / 0 šŸ‘Ž


The Distributor hole is the same on all of the blocks. There are differences in the various front covers though the years though it should not be an issue. Make sure you use ARP rod bolts as the Windsor greatest weakness is the skinny weak rod bolts.

The crank will be a 50oz balance so make sure you have the correct dampener and flexplate.

As far as the heads - no stock head is any where near as good as a decent modern head. A stock head = stock power. You are starting with a great base and leaves you lots of choices.

Happy to answer any questions.


I will someday think of something clever to say.

View user's profile
nassi
Mustang King

Offline
Joined: Aug 01, 2010
Posts: 6429
Location: Perth

0 šŸ‘ / 0 šŸ‘Ž


boofhead wrote
The Distributor hole is the same on all of the blocks. There are differences in the various front covers though the years though it should not be an issue. Make sure you use ARP rod bolts as the Windsor greatest weakness is the skinny weak rod bolts.

The crank will be a 50oz balance so make sure you have the correct dampener and flexplate.

As far as the heads - no stock head is any where near as good as a decent modern head. A stock head = stock power. You are starting with a great base and leaves you lots of choices.

Happy to answer any questions.

Thanks again, never even thought abaout the rod bolts and would have left it as it is. Thanks for the tip, looks like a first step.
cheers


View user's profilePhoto Gallery
nassi
Mustang King

Offline
Joined: Aug 01, 2010
Posts: 6429
Location: Perth

0 šŸ‘ / 0 šŸ‘Ž


Boofhead, do all the twisted wedge windsor heads use the stock exhaust manifold bolt patern, or are they available in the wider spacing like the Ford Z heads and the Dart heads?
thanks mate.


View user's profilePhoto Gallery
boofhead
Mustang King

Offline
Joined: Nov 02, 2010
Posts: 4501
Location: Brisbane

0 šŸ‘ / 0 šŸ‘Ž


There are two points as far as the exhaust goes

1) Is the exhaust located in the same place. For example, the TW170 because it uses a clevo like design can get high flow in the exhaust without relocating the exhaust. The most common design change you will find (when they do not change the valve angle) is to raise the exhaust port by 1/2 inch. This is not alot though it can be an issue with bolting up existing exhaust setups or it can cause header clearance issues (usually under the car).

So: the standard TW range keeps the exhaust located in the factory position while the majority of other performance heads move the exhaust port higher. The TW High Port range combines the Value angle change and the higher located port.

2) Secondly point is the exhaust header mounting hole locations. As your obviously aware the factory exhaust ports are quite small hence the bolts holes are also close together. This can be an issue if you want to run headers that have primaries that are quite wide. Some after market heads provide two sets of holes (if they can) to allow either. The standard TW range provides the factory holes only. In my mind this is find as the wider hole pattern allows you to bolt up a part that does little to further performance potential. The port is smaller so it results in a high speed flow so having a sudden deep edge as gas passes out the exhaust port is not going to help - might actually be a hindrance. If your going for large power then your going to use the larger heads so high ports are your choice - then very larger primaries might be in order. My view: 302 1 5/8 p , 347/351 1 3/4 primaries, 400 / 427 2 inch primaries.

So; same as above the High ports are designed for (and should be used) in the large strokers so if your building a 408 (which your not) then I do not think you do not need so worry about wider mounting holes for your headers (though already have a set of headers).

Hope this helps.


I will someday think of something clever to say.

View user's profile
nassi
Mustang King

Offline
Joined: Aug 01, 2010
Posts: 6429
Location: Perth

0 šŸ‘ / 0 šŸ‘Ž


Thanks mate, it was point 2 I was considering. The factory bolt holes are very close to the port on the TW heads, which makes headers a pain to make and install. I'll check the size of the primaries on the cars we have running TW heads.
I was considering using Ford Racing "Z" heads to get around this, plus there may be a complete setup available at a good price.
cheers


View user's profilePhoto Gallery
All times are Australia/Sydney
Go to page 1, 2, 3, 4, 5, 6, 7 ā€¦ 13, 14, 15 Next


Jump to:

TopPostersToday
   Dwayne 
 Posts: 
 3 

   Husky65 
 Posts: 
 3 

   Nuts 
 Posts: 
 2 

   66STNG 
 Posts: 
 2 

   nassi 
 Posts: 
 1 

   gbx78 
 Posts: 
 1 

LatestForumPosts
Last 10 Forum Messages

Husky's 65 Restomod
Last post by gbx78 in Mustang Projects on Jan 20, 2018 18:44:38

66 roof bows
Last post by 66STNG in General Tech Advice on Jan 20, 2018 18:19:47

Nuts Clearance Radiator, T5 Sold, Rack Sold
Last post by Nuts in Mustang Parts for Sale on Jan 19, 2018 12:43:29

Merts deceased estate sale
Last post by unilec5544 in Pre 1973 on Jan 18, 2018 20:29:41

Years in the making....
Last post by ACTstanglover in Mustang Projects on Jan 17, 2018 23:18:27

Dan Gurney passes away
Last post by ozbilt in Events on Jan 17, 2018 10:40:17

67 FG Resto Mod
Last post by Roger in Mustang Projects on Jan 17, 2018 06:54:24

Canberra
Last post by Ausjacko in Events on Jan 16, 2018 17:32:16

Jacko's Project
Last post by Ausjacko in Other Projects on Jan 14, 2018 19:58:14

New Heart for Scarlet
Last post by soc123_au in Mustang Projects on Jan 12, 2018 22:29:21

SocialMedia

Like this page? Google +1 it!