Jump to content

Tech Spam thread - because 1/4" BSP gets 5 hand spans to the jiggawatt


Roman

Recommended Posts

  • Replies 6.1k
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

I fitted a roll over switch in my escort when I put in an electric fuel pump, I'm not sure clint even looked at it when he did the cert, but it made me feel better
 

I also fitted a non returning fuel pressure regulator as my pump had too much pressure. The bike carbs recommended around 2.8 psi and at 3.2 they started to overflow, pump was rated at 7-8psi I think

 

I'm not really sure where the pressure requirement comes from for carbs, as long as there is enough pressure to get the fuel into the bowl at max flow. But there does seem to be a large variation in requirements, like usa carbs generally require 8psi or even 10+psi vs bike carbs and euro carbs needing around 3-4

Link to comment
Share on other sites

Mine is wired direct to the ignition. That worries me a bit, so I bought an oil pressure safety switch like this

 

https://www.summitracing.com/int/parts/crt-a68301/overview/

 

I couldn't make the plumbing work when I tried to fit it (not enough NPT adaptors) so it's not on the car right now.

 

I also got a non-return regulator but haven't fitted that either.

 

TL:DR Bigger pump wired direct to ignition works for me for now.

Link to comment
Share on other sites

think i had similar worries with starlet but went with bigger pump on OS advice and zero issues.

seem to recall cert guy saying wire pump relay control via oil light switch to kill pump when the poo stalls..?

Good idea to wire a safety doofer in with a low pressure fuel system, but it's not actually a requirement. It is on efi systems however.

  • Like 1
Link to comment
Share on other sites

Think I'll just whack the 4.5-6psi pump in and cross my fingers then haha.

It's pretty much the same price as the 3-4.5psi anyway.

Anyone got a pump blanking plate off a sohc turbo Mitsi spare?

i used a wood block as a blanking plate but a metal one is so much nicer.  Cut a piece of broken mower body and drill holes maybe?

  • Like 1
Link to comment
Share on other sites

Drum brakes, these are Riley 1500 ones which bolt up to a Morris Minor since they share the same suspension design.

 

All 4 cylinders were re-done with stainless steel and new rubbers by a place in ChCh.

 

Shoes re-done by ABC iirc (these pics are from 5 years ago) to match the drum arc. New hoses. Drums look good.

 

p1030930.jpg

 

p1030931.jpg

 

p1030931.jpg

 

I'm reasonably sure they are assembled correctly. Cross checked just now against the oxford which uses a similar Girling design.

 

p1090368.jpg

 

The problem is that they pull to left - have done since fitted really.

 

Things done

- chamfered the leading edges of the shoes on the left to reduce initial grab.

- Bled carefully (many times). The bleeder is on the lower cylinder so I've unbolted the backing plate and rotated it up for bleeding, particularly on the RHS.

- Deglazed the shoes and drums with emory tape.

- Swapped drums (probably, its hard to recall. I'll swap them tonight anyway.)

- swapped springs from one side to the other.

 

Nothing helped much.

 

There are 'pins' adjustable behind the shoes to square them up with the drums, it's hard to be sure, but I've alighed the shoes to the backing plate with a set square so I think its OK.

 

Any ideas before I either give up and take it to ABC to look at ($$) or but the stock drums back on ($$ needed to new cylinders and shoes for these anyway).

Link to comment
Share on other sites

What mof said.

When I get issues with imbalanced drums, mainly on hiace vans, is swap the drums and leading shoes, de-dust and adjust. Boom. Can get that shit down to zero percentage imbalance. However. You're talking about British shit with shit jammed on from a different piece of British shit. So its most likely always going to be shit, because British.

  • Like 7
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...