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REBEL/M-XRV8 |
Post Reply | Page <1 89101112 18> |
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amcenthusiast
AMC Addicted Joined: Jul/02/2012 Location: SW Atlanta GA Status: Offline Points: 1778 |
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-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 |
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443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/ |
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amcenthusiast
AMC Addicted Joined: Jul/02/2012 Location: SW Atlanta GA Status: Offline Points: 1778 |
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Fabricating custom throttle linkage bracket:
Edited by amcenthusiast - Sep/27/2018 at 10:41pm |
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443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/ |
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White70JavelinSST
Supporter of TheAMCForum Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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one word AWESOME !
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70 Javelin SST, second owner, purchased 1972
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amcenthusiast
AMC Addicted Joined: Jul/02/2012 Location: SW Atlanta GA Status: Offline Points: 1778 |
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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. |
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443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/ |
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amcenthusiast
AMC Addicted Joined: Jul/02/2012 Location: SW Atlanta GA Status: Offline Points: 1778 |
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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 |
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443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/ |
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amcenthusiast
AMC Addicted Joined: Jul/02/2012 Location: SW Atlanta GA Status: Offline Points: 1778 |
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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 |
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443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/ |
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amcenthusiast
AMC Addicted Joined: Jul/02/2012 Location: SW Atlanta GA Status: Offline Points: 1778 |
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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) |
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443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/ |
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Buzzman72
AMC Addicted Joined: Sep/15/2009 Location: Southern IN Status: Offline Points: 2713 |
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Any updates?
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Buzzman72...void where prohibited, your mileage may vary, objects in mirror may be closer than they appear, and alcohol may intensify any side effects.
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Jmerican
AMC Addicted Joined: Mar/29/2016 Location: Seattle, Wa Status: Offline Points: 585 |
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any interest in a Qjet?
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amcenthusiast
AMC Addicted Joined: Jul/02/2012 Location: SW Atlanta GA Status: Offline Points: 1778 |
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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. |
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443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/ |
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