MG Sports Cars

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

Go to Thread: PreviousNext
Go to: Forum ListMessage ListNew TopicLog In


MGV
Luis Velasco
Peru, IN
(9 posts)

Registered:
04/04/2010 10:44PM

Main British Car:
MGB 1979 3.4L Chevrolet, T-5 BW Transmision

authors avatar
HTOB/trany & Starting problems
Posted by: MGV
Date: May 01, 2010 01:04AM

I just finish the instalation of a 3.4L (Carburetor and distributor) with a t-5 transmission. Everything was going perfect until a tray to shift, nothing. I can see the HTOB from under tha car, appear to be installed properly, there is very little space between the HTOB and the presure plate fingers. Probably about 1mm or less. The HTOB appear to open completely and push the fingers of the presure plate, but the clutch plate do not release to be able to shift. Any ideas? The second problem is, few days ago I went to start the car, it crank but did not start, like not having electricity. I tray to start the car the next day and it work. Today I went to start the car and the samething happened, it cranks but do not start, like having no electricity. I check and I have 12 volts at the coil. Thanks.


Moderator
Curtis Jacobson
Portland Oregon
(4577 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: HTOB/trany & Starting problems
Posted by: Moderator
Date: May 03, 2010 01:15AM

Welcome to the BritishV8 forum!

General tip for future reference: dividing questions over different new threads might bring more and better responses.

I'm a little unclear about your description of the clutch problem. Are you saying that the HTOB simply doesn't seem to travel far enough to do its job? That's not the most common problem. In fact, it's more usual that we need to install a pedal-stop to avoid hyper-extending (and thus damaging) the HTOB. Perhaps you might try bleeding the fluid (again?) to be absolutely sure there are no air bubbles in the system.

There are of course MANY possible causes for an intermittent ignition failure. Very frustrating! Assuming you're using new parts, one of the first things I'd check is the high tension lead from the coil to the distributor. You wouldn't be the first person to get a defective cable. Perhaps you can try swapping the cable with an old one or one from another car?


pcmenten
Paul Menten

(242 posts)

Registered:
10/08/2009 10:40AM

Main British Car:


Re: HTOB/trany & Starting problems
Posted by: pcmenten
Date: May 03, 2010 06:50PM

The ignition failure might be a grounding problem. Make sure there are grounds between the engine and the battery, the engine and the chassis, and the engine and the firewall/wiring harness.


Sorry, only registered users may post in this forum.