TheAMCForum.com Homepage
Forum Home Forum Home > The Lounge Area > Member Projects
  New Posts New Posts RSS Feed - REBEL/M-XRV8
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Click for TheAMCForum Rules / Click for PDF version of Forum Rules
Your donations help keep this valuable resource free and growing. Thank you.

REBEL/M-XRV8

 Post Reply Post Reply Page  <1 89101112 18>
Author
Message
amcenthusiast View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/02/2012
Location: SW Atlanta GA
Status: Offline
Points: 1778
Post Options Post Options   Thanks (0) Thanks(0)   Quote amcenthusiast Quote  Post ReplyReply Direct Link To This Post Posted: Sep/27/2018 at 8:31am
-Went ahead and straightened the unmodified stock type valley cover, brazed the baffle plate on, glued the cork perimeter gasket on etc. in order to install the custom modded spread bore intake manifold... deceptively easy looking task  ...took all afternoon to get it all installed 'right'.

Doing this primarily to help visualize how to make the engine cover, which is a component part of installing new floor sections, to give the car a better chance of becoming street legal.

Next sequence of pics:









Edited by amcenthusiast - Feb/06/2020 at 7:54pm
443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/
Back to Top
amcenthusiast View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/02/2012
Location: SW Atlanta GA
Status: Offline
Points: 1778
Post Options Post Options   Thanks (0) Thanks(0)   Quote amcenthusiast Quote  Post ReplyReply Direct Link To This Post Posted: Sep/27/2018 at 10:22pm
Fabricating custom throttle linkage bracket:




Edited by amcenthusiast - Sep/27/2018 at 10:41pm
443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/
Back to Top
White70JavelinSST View Drop Down
Supporter of TheAMCForum
Supporter of TheAMCForum
Avatar

Joined: Aug/08/2012
Location: Minnesota
Status: Offline
Points: 4867
Post Options Post Options   Thanks (0) Thanks(0)   Quote White70JavelinSST Quote  Post ReplyReply Direct Link To This Post Posted: Sep/28/2018 at 9:05am
one word

AWESOME !
70 Javelin SST, second owner, purchased 1972
Back to Top
amcenthusiast View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/02/2012
Location: SW Atlanta GA
Status: Offline
Points: 1778
Post Options Post Options   Thanks (0) Thanks(0)   Quote amcenthusiast Quote  Post ReplyReply Direct Link To This Post Posted: Sep/30/2018 at 8:05pm
Thanks for the positive comment.

Got all the custom parts made to hook up the Thermoquad:





-Started the engine and ran it some, only to find out the idle circuits obviously need more work.

Tquad idle circuit passageways are difficult to work on: http://board.moparts.org/ubbthreads/ubbthreads.php/topics/2361559/re-thermoquad-tuning-at-cruise.html

I'll be adapting and testing my two spare Holley 4360s next, so the test mule 327 engine becomes tame and lower on the priority list to complete the mid-engine project goal.
443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/
Back to Top
amcenthusiast View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/02/2012
Location: SW Atlanta GA
Status: Offline
Points: 1778
Post Options Post Options   Thanks (0) Thanks(0)   Quote amcenthusiast Quote  Post ReplyReply Direct Link To This Post Posted: Oct/24/2018 at 9:28am
Showing Holley 4360 pn# (?) made for direct replacement of same Carter Thermoquad (both made for '76 Chrysler 400 RB V8)

Notice all exterior casting 'blobs' are trimmed off the 4360 to reveal the beautifully simple, lightweight carburetor it really is.

All Holley 4360 carburetors come with a brass float (never goes soggy) and have no rubber diaphragm anything inside the carb to go bad = so it's basically impossible for a 4360 carb to seep fuel through a ruptured/rotten diaphragm down into the intake manifold (to 'accidentally' leak fuel into the engine oil) ...which is truly 'a good thing' on old engines that don't get run on a daily basis.

Hence, the Holley 4360 is one the best 'ethanol compatible' (not merely 'resistant' or 'tolerant') carburetors available to adapt to your older gasoline engine for running E10 gasohol.... IMO(!)














Edited by amcenthusiast - Jul/25/2020 at 11:38pm
443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/
Back to Top
amcenthusiast View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/02/2012
Location: SW Atlanta GA
Status: Offline
Points: 1778
Post Options Post Options   Thanks (0) Thanks(0)   Quote amcenthusiast Quote  Post ReplyReply Direct Link To This Post Posted: Oct/24/2018 at 9:34am
The engine starts very easy with this carburetor and idles very smooth down to about 500 rpm.

-The operational characteristic is like 'night and day' compared to XRV8 RP independent runner induction system.

-The low idle rpm capability of the 450 cfm rated Holley 4360 makes the high stall torque converter very noticeable.

---------------------------------------------------------------------------------------------------------------------------

Edit: ...honestly, the 4360 made the engine feel too tame IMO, so I cleaned the idle circuits on the Thermoquad and it idles great too! (yippie!)


Edited by amcenthusiast - Oct/30/2018 at 7:31am
443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/
Back to Top
amcenthusiast View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/02/2012
Location: SW Atlanta GA
Status: Offline
Points: 1778
Post Options Post Options   Thanks (0) Thanks(0)   Quote amcenthusiast Quote  Post ReplyReply Direct Link To This Post Posted: Nov/21/2018 at 8:56am
So... in the process of testing the two rebuilt carbs on the heavily modified stock 4bbl intake manifold... the engine was making a serious whistle sound = Not Yippie! = 'a bad thing'.

And this is another reason why I want to test any parts I make in order to find out if there are any defects in the product.

Long story short, it was a leaky intake manifold gasket.

I solved the problem by grinding the undersides of the front runners which were contacting the topside of the lifter valley cover.

(who knows how many other Rambler V8 owners have this 'interference problem' also when swapping intakes)






 

 
443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/
Back to Top
Buzzman72 View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Sep/15/2009
Location: Southern IN
Status: Offline
Points: 2713
Post Options Post Options   Thanks (0) Thanks(0)   Quote Buzzman72 Quote  Post ReplyReply Direct Link To This Post Posted: Dec/30/2018 at 10:14am
Any updates?
Buzzman72...void where prohibited, your mileage may vary, objects in mirror may be closer than they appear, and alcohol may intensify any side effects.
Back to Top
Jmerican View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Mar/29/2016
Location: Seattle, Wa
Status: Offline
Points: 585
Post Options Post Options   Thanks (0) Thanks(0)   Quote Jmerican Quote  Post ReplyReply Direct Link To This Post Posted: Jan/03/2019 at 2:35pm
any interest in a Qjet?
Back to Top
amcenthusiast View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/02/2012
Location: SW Atlanta GA
Status: Offline
Points: 1778
Post Options Post Options   Thanks (0) Thanks(0)   Quote amcenthusiast Quote  Post ReplyReply Direct Link To This Post Posted: Jan/21/2019 at 8:10am
Hey Buzzman ...yeah progress is slowed down but still going.

Hello Jmerican, hey good question, as you can tell both the Carter Thermoquad and the Holley 4360 are Rochester Quadrajet competitors.

-Carter's Thermoquad design solves the problem of Rochester's heavy zinc bodied design.

-Holley's Economaster design solves the problem of Rochester's complexity.

No doubt the metering rod style Rochester carbs were among the best of the era, if not ~The Best~ carbs that ever came on US cars prior to advent of memory chip controlled fuel injection systems.

Made in the millions, Q-jets have massive tune-ability and parts availability.

Quadrajetparts.com is one of my favorite carb parts vendors -I really like their webpages -good source for carburetor information along with excellent parts for sale, good prices & fast shipping.

(as anyone might see) this Rebel project is mainly about showing off the Rambler V8 engine.

My two reasons for not 'going with a Q-jet are:

1) They are a GM product, which sparks a huge sense of rivalry in my mind.
2) Q-jets are heavy (like the old Holley modular design in that regard)

Since I believe the reputation of AM's Rambler V8 is spoiled by (arguably ignorant) remarks saying it's too heavy to make a good hot rod engine candidate, I'm somewhat permanently inclined to show modifications to make the engine lighter.
 
443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/
Back to Top
 Post Reply Post Reply Page  <1 89101112 18>
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.03
Copyright ©2001-2019 Web Wiz Ltd.

This page was generated in 0.125 seconds.
All content of this site Copyright © 2018 TheAMCForum unless otherwise noted, all rights reserved.
PROBLEMS LOGGING IN or REGISTERING:
If you have problems logging in or registering, then please contact a Moderator or