MG Sports Cars

engine swaps and other performance upgrades, plus "factory" and Costello V8s

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MGBV8
Carl Floyd
Kingsport, TN
(3670 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: 340 upgrade
Posted by: MGBV8
Date: June 14, 2014 01:32PM

YouTube it, then embed it here.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5776 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: 340 upgrade
Posted by: BlownMGB-V8
Date: June 15, 2014 12:29AM

Don't know how to embed it but at least here's the link.


[www.youtube.com]


MGBV8
Carl Floyd
Kingsport, TN
(3670 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: 340 upgrade
Posted by: MGBV8
Date: June 15, 2014 07:34AM

You got. Sounds great!


Dan B
Dan Blackwood
South Charleston, WV
(966 posts)

Registered:
11/06/2007 01:55PM

Main British Car:
1966 TR4A, 1980 TR7 Multiport EFI MegaSquirt on the TR4A. Lexus V8 pl

authors avatar
Re: 340 upgrade
Posted by: Dan B
Date: June 15, 2014 08:51AM

Sweet!!!!


Scott68B
Scott Costanzo
Columbus, Ohio
(540 posts)

Registered:
10/25/2007 11:30AM

Main British Car:
1968 MGB GM 5.3 LS4 V8

authors avatar
Re: 340 upgrade
Posted by: Scott68B
Date: June 15, 2014 09:38AM

Very nice!!


mgb260
Jim Nichols
Sequim,WA
(1966 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: 340 upgrade
Posted by: mgb260
Date: June 15, 2014 12:28PM

CONGRATS!!! Jim. I'm looking forward to the tranny and paddle shifter!


rficalora
Rob Ficalora
Willis, TX
(2602 posts)

Registered:
10/24/2007 02:46PM

Main British Car:
'76 MGB w/CB front, Sebring rear, early metal dash Ford 302

authors avatar
Re: 340 upgrade
Posted by: rficalora
Date: June 15, 2014 12:45PM

Sounds phenomenal. Very smooth. Looks great too. Your machining skills are envied!



MG four six eight
Bill Jacobson
Wa state
(295 posts)

Registered:
10/23/2007 02:15AM

Main British Car:
73 MGB Buick 215, Eaton/GM supercharger

Re: 340 upgrade
Posted by: MG four six eight
Date: June 15, 2014 11:44PM

Congrats Jim, that sounds really good!!

Bill


Moderator
Curtis Jacobson
Portland Oregon
(4411 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: 340 upgrade
Posted by: Moderator
Date: June 16, 2014 03:23PM

Rock and roll!


74ls1tr6
Calvin Grannis
Elk Grove,CA
(1145 posts)

Registered:
11/10/2007 10:05AM

Main British Car:
74 TR6 / 71 MGB GT TR6/Ls1 71 MGB GT/Ls1

authors avatar
Re: 340 upgrade
Posted by: 74ls1tr6
Date: June 16, 2014 05:24PM

Nice sounding 340 fly catcher you have there :-). Congrats Jim on the video. This needs to be posted in the video section please!


Todd McCreary
Todd McCreary

(201 posts)

Registered:
03/16/2012 10:57PM

Main British Car:


Re: 340 upgrade
Posted by: Todd McCreary
Date: June 16, 2014 10:39PM

Would I embarass myself by admitting to knowing that the music Jim has on in the background is Mike & the Mechanics?



Edited 1 time(s). Last edit at 06/16/2014 10:39PM by Todd McCreary.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5776 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: 340 upgrade
Posted by: BlownMGB-V8
Date: June 21, 2014 07:55PM

Thanks for all the kind comments, that means a lot.
So today I decided to try and see if I could get the wheels to move under engine power with the car on the lift. I've got the idle down to about 1300 now and should be able to get it lower as I work on the tune, particularly the IAC bins which so far I haven't even touched. In fact I suspect the whole tune which was the one left over from the 215 blower motor may be a little knackered, and I need to migrate to TunerStudio anyway. But regardless, I fired up the engine and put it in reverse then blipped the throttle some and by golly the tires began to rotate. Put it in drive and got them to go the other way. Put on the brakes and... they didn't do much. need a little attention there likely as not.

But this is great news. It means that, likely as not the car will move itself in limp mode without any power to the transmission. Sometime after I get a bit more tuning done I will test that out. It'd be great if I could actually drive it a bit, I'd love to be able to take it out on the road if only for a drive around the block.

Jim


Moderator
Curtis Jacobson
Portland Oregon
(4411 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: 340 upgrade
Posted by: Moderator
Date: June 23, 2014 12:47AM

Great news indeed!

BTW, I think you're gonna like TunerStudio.


MGBV8
Carl Floyd
Kingsport, TN
(3670 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: 340 upgrade
Posted by: MGBV8
Date: June 23, 2014 08:46AM

Jim,

Double check that alternator belt.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5776 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: 340 upgrade
Posted by: BlownMGB-V8
Date: July 26, 2014 11:16AM

Progress has been kinda slow because of other demands but there has been a little, and I've identified several things that will have to be done.

Charging. The alternator and rectifier part works well but the regulator doesn't. Not sure why exactly, it tests good and appears to be wired correctly, but is more complex than it has to be. The regulator is from a Japanese alternator and has a center tap to the stator windings which I added to tie into the root of the wye and it could just be that the alternator it came from had an electrically unbalanced stator. Not knowing the internal circuitry it's impossible to say. I used that one for compactness, a usable shape, and because of the sealed connector, but I'm now thinking about just using one of the old Mopar regulators because it is so simple and rugged. I'll probably stop by Hamilton's and see what they think might work, maybe they have something better. Worst case, I use the GM part which is a weird shape and uses spade lugs. But at least it is small and electrically matches.

Cooling: Fan control is somewhat lacking, one more incentive to complete the upgrade from MS2 to MS3. I'm not too happy with the small control switch mounted on the surge tank, it doesn't seem reliable. I also have a small antifreeze leak at the thermostat neck which is a larger concern, perhaps welding distorted the flange on the intake, or I didn't get a good job with the sealant.

Oil: The leak under the intake is still there and could mean I'll have to pull the intake. Not a small job.

Noise: Looks like I may have a bad bearing in the belt drive so I'll have to pull that down and check. Might be a good opportunity to anodize the idler pulleys.

PCV: I enlarged the ends of the big breather tube from 5/8 to 3/4 for a tighter fit in the end boots but there is an issue with idle speed control that I haven't gotten sorted out yet. I may be drawing excess air through the PCV system, or I may have an air leak somewhere in the intake.

So I've now got 4 reasons to pull the intake manifold, and that may be a winter job. For now I'd like to get the smaller issues sorted and get close on the tuning. I did finally switch over to TunerStudio but had to overcome my increasing reluctance to deal with software issues. Fixing the mismatch between controller and Laptop was not so hard, but as is usually the case figuring out how was confusing. In the end it was just a matter of finding the right .ini file which it turns out I have a copy of on the desktop, and dropping that in the TS directory. Seems to me the TS software could have done a global search and found that, so I've sent Phil Tobin a suggestion about it and maybe that improvement will be made and could help others.

I've been doing short runs to try and resolve some of these issues and I've been making some progress but it's been a sort of scattered approach and it's hard to see progress, but I'd like to eliminate all the potential vacuum leak sources I can, get the charging working, get the fans working better, and then I'll be ready to see if it'll move itself, although if I need the lift before I get that stuff done I might change that order.

On the vacuum though:
1) IAC - It is leaking air at idle. Either it is not set right, is not wired right, or is not seating right. (new valve)
2) PCV - How much air is getting through the crankcase? (Is air being pulled past the crankcase seals? or is there a leak somewhere? I should probably start a thread on this topic.)
3) Manifold leak? - Is air getting in through some other route such as the intercooler core or a vacuum or sensor connection? Is there a gasket leak?

So, doesn't look hopeful for driving it this summer and the quantity of work is daunting. I seem to have slowed down. But I hope to at least get far enough along to install the transmission controller and do some testing of that before bad weather sets in.

Jim



rficalora
Rob Ficalora
Willis, TX
(2602 posts)

Registered:
10/24/2007 02:46PM

Main British Car:
'76 MGB w/CB front, Sebring rear, early metal dash Ford 302

authors avatar
Re: 340 upgrade
Posted by: rficalora
Date: July 27, 2014 09:39PM

Ok, I'm confused... If not running this summer, what's the video you posted today?


Dan B
Dan Blackwood
South Charleston, WV
(966 posts)

Registered:
11/06/2007 01:55PM

Main British Car:
1966 TR4A, 1980 TR7 Multiport EFI MegaSquirt on the TR4A. Lexus V8 pl

authors avatar
Re: 340 upgrade
Posted by: Dan B
Date: July 29, 2014 11:46AM

Where did he post the video, Rob? Jim was on a big adrenaline rush the other night. He got the monster to move under it's own power, transmission in "limp" mode. He told me he kicked the tail out a little....some limp, huh?


ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(1065 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: 340 upgrade
Posted by: ex-tyke
Date: July 29, 2014 12:06PM

Doesn't your brother share anythiong with you?
[www.mgexp.com]


74ls1tr6
Calvin Grannis
Elk Grove,CA
(1145 posts)

Registered:
11/10/2007 10:05AM

Main British Car:
74 TR6 / 71 MGB GT TR6/Ls1 71 MGB GT/Ls1

authors avatar
Re: 340 upgrade
Posted by: 74ls1tr6
Date: July 29, 2014 03:57PM

It is also posted in our video link here in BV8!


[www.youtube.com]


Dan B
Dan Blackwood
South Charleston, WV
(966 posts)

Registered:
11/06/2007 01:55PM

Main British Car:
1966 TR4A, 1980 TR7 Multiport EFI MegaSquirt on the TR4A. Lexus V8 pl

authors avatar
Re: 340 upgrade
Posted by: Dan B
Date: July 29, 2014 03:58PM

Thanks for sharing that, Graham. I don't regularly visit the mgexperience website, so I didn't know about the video. He did call me though.
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