Are you madabout kit cars      
 "We've Got Kit Cars Covered" Information about Madabout-Kitcars.com Contact Madabout-Kitcars.com         Home of UK kit cars - madabout-kitcars.com Various kit car write ups All the latest kit car news Kit car related and general discussion

Search
Manufacturers
Kit Cars
Kit Car Data sheets
Picture Gallery
SVA Knowledgebase
Clubs & Communities
Build cost estimator
Kit cars for sale
Knowledge Base 
KitcarUSA.com
Classic-Kitcars.com
 

Go Back   Madabout Kitcars Forum > Mad Build Area > Marlin Sportster, Cabrio, Berlinetta and Roadster builds

Marlin Sportster, Cabrio, Berlinetta and Roadster builds Enthused or Confused about your vintage Marlin build? Ask away here or show off your build.

Reply
 
Thread Tools Display Modes
  #21  
Old 9th January 2008, 14:06
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

Well there are no cracks which is good news! But the guy at the shop refused to just clean it, check it was straight (and skim if needed) without overhauling the whole head which would cost 500 - 600!

So I'll try a different shop as I can't be bothered dealing with arrogant prats that won't listen to what the customer wants and telling you will do a crap job if you do it yourself.
Reply With Quote
  #22  
Old 9th January 2008, 18:23
MartinClan's Avatar
MartinClan MartinClan is offline
Senior Member
Enthusiast
 
Join Date: Sep 2004
Posts: 1,773
MartinClan is on a distinguished road
Default

Quote:
Originally Posted by Patrick View Post
Well there are no cracks which is good news! But the guy at the shop refused to just clean it, check it was straight (and skim if needed) without overhauling the whole head which would cost 500 - 600!
Vote with your feet and go somewhere else. There are plenty of places (round here there are anyway). Most of them are small outfits but seem to do a good job. Best to go by recommendation if you can.

Robin
Reply With Quote
  #23  
Old 9th January 2008, 18:36
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

This place was recommend to me! I've got the name of another to try now


Puller-me-jig in place. The metal plate is bolted to the bit that needs to come off. In the middle a long bolt (out of an M52 block!) and a nut. Theory is you do up the bolt in the middle and it pops off.

The metal is already bent from the first time it wont done up (it moved about 1/2 mm)

Carefully the middle bolt was done up until it started pulling off.

and here it is finally!

There were tiny amount of rust underneath which is what was causing it to stick.

Needs a good clean out and polish before test fitting on the M52 crank.
Reply With Quote
  #24  
Old 9th January 2008, 20:36
alackofspeed's Avatar
alackofspeed alackofspeed is offline
Senior Member
Enthusiast
 
Join Date: Jul 2005
Location: Dorset
Posts: 1,179
alackofspeed is on a distinguished road
Default

I don't know where in Hampshire you are, but I thought I'd mention 4 of my friends have received good service from:

http://www.magnumengines.co.uk/
Reply With Quote
  #25  
Old 9th January 2008, 21:08
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

Thanks for the link - I'm near Winchester, I'll check out Saunders Motor Works Ltd in Southampton which I've been recommend first as they are a bit closer. If I don't have any luck there I'll try Magnum
Reply With Quote
  #26  
Old 10th January 2008, 18:04
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default


M20B25 piston test fitted with M20B20 conrod and M52B28 crank! Moves well.

Piston / conrod / crank combo at top dead centre - looks good
Reply With Quote
  #27  
Old 11th January 2008, 10:03
GreatOldOne's Avatar
GreatOldOne GreatOldOne is offline
Senior Member
Enthusiast
 
Join Date: Sep 2005
Location: Northampton, UK
Posts: 1,886
GreatOldOne is on a distinguished road
Default

You think that's good - wait until you have them all in and then give it a spin - it's hypnotic...
Reply With Quote
  #28  
Old 15th January 2008, 19:43
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

Its going to need a thicker head gasket that standard. Still trying to figure out much bigger at the moment!


Crank spacer taking shape on the lathe

One step left is to machine down the spacer to the correct size - about 18mm
Reply With Quote
  #29  
Old 16th January 2008, 19:11
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

I've finished the crank spacer:


Spacer machine down to size, about 17.90mm with in 0.1mm of the original.

Cam belt pulley test fit, this a very tight fit so it will need the "the tool" to get it back off again.

As the M52 crank nose it a bit longer than the M20 the washer in the front doesn't sit flush.

Washer in the lathe, need to take about 1.25mm off giving 0.1mm space between it and the crank nose.

Finished off and the edge smoothed off

Test fit of all parts on the M52 crank.

Comparison: M52B28 crank and the front and M20B25 at the back
Reply With Quote
  #30  
Old 19th January 2008, 15:36
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

Cleaned up all the pistons today, but managed to snap one of the piston rings in the process - doh!

Andy, the chap who came up with the conversion several years ago has recommended I use the standard head gasket with this conversion!

One more discovery after examining the head, its not quite straight - its warped ever so slightly towards the front where the thermostat sits. Check with a steel ruler, but to be 100% sure I used the lathe bed which confirmed it. Off to the machine shop with the head next week then!
Reply With Quote
  #31  
Old 20th January 2008, 15:32
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default


Silver is so last month, so blue it is this time!

We used red hamerite on the exhaust plugs and those didn't discolour until we welded something on it - so it seams heat resistance enough!

The hammered blue looks great out in the light.

Oil pump disassembled and cleaned. It all looks fine nothing really worn so no need to replace it.

The parts slot right into place, covered in assembly oil. This stuff is thicker than normal oil and kinda sticks to everything. Should help keep everything lubricated on the fist run.

The filter element has a few hardended clumps inside it but nothing major!
Reply With Quote
  #32  
Old 27th January 2008, 18:57
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

Got the head back from the machine shop on Friday (the place in Southampton were very good and friendly (if a little bit odd), unlike the first place!), they took 4 thou off to remove the warp:

Starting a bit of valve lapping

2 down only 10 to go!

All the valves boxed up and ordered

Throttle body attaches here, its been ground a bit larger - more pictres to follow on that at some point

Valve springs - the larger one has shrunk 2mm over the inside ones and new springs.

All valve lapped in - a simple short sentance that will take you hours and hours, especially if you have pits on the valves like we did!

A nice mat grey colour is what your after!

The valves all have a nice mat dull finish on them as well.

Valve stem oil seals going on - a size 11 socket bit proves to be exactly the right size to push these in place.

One at a time the new schik valve springs go in, putting the colletes back on proved to be a very fiddly proceedure!

All springs now in place!

All cleaned up - the head needed a 4 thou skim to take the warp out of it.
Reply With Quote
  #33  
Old 28th January 2008, 07:17
GreatOldOne's Avatar
GreatOldOne GreatOldOne is offline
Senior Member
Enthusiast
 
Join Date: Sep 2005
Location: Northampton, UK
Posts: 1,886
GreatOldOne is on a distinguished road
Default

Bling!

Very nice. Going for a colour cor-ordinated block, eh? (You're doing the sportster blue as well, IIRC...)
Reply With Quote
  #34  
Old 28th January 2008, 07:22
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

Yup, that and I was not impressed with the silver finish. Looked nice at first but looks kinda dull - I was hoping it would set to a nicer finish after running the engine! The head will say in Ali and the intake / rocker will say black / ali

I might pull the callipers off and do those blue as well seeing as the rush is showing through the paint already.

Thinking of doing the sump yellow

The e30zone guys didn't think doing the valves with the aid of a drill was a good idea but seems to have worked OK. Took all day doing it with a drill. We'd have been there all week if we did those by hand!
Reply With Quote
  #35  
Old 28th January 2008, 07:33
MartinClan's Avatar
MartinClan MartinClan is offline
Senior Member
Enthusiast
 
Join Date: Sep 2004
Posts: 1,773
MartinClan is on a distinguished road
Default

Hey Patrick

That's a really clean workshop you have there - great for engine preparation and other stuff

Looking good anyway. Is that the first engine you have rebuilt? I find it is one of the most satisfying jobs to do.

Robin
Reply With Quote
  #36  
Old 28th January 2008, 07:45
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

Thanks (that's my dad's work shop) I though it best to do all the head work inside. Won't be doing the rest of the assembly there as lugging the engine upstairs will be a pain in the back (and not back side this time )

Yup it's first engine I've rebuilt - I will be much relieved once it's running again!
Reply With Quote
  #37  
Old 28th January 2008, 07:50
GreatOldOne's Avatar
GreatOldOne GreatOldOne is offline
Senior Member
Enthusiast
 
Join Date: Sep 2005
Location: Northampton, UK
Posts: 1,886
GreatOldOne is on a distinguished road
Default

Quote:
Originally Posted by Patrick View Post
Thinking of doing the sump yellow
Nah - CBS do some lovely hot pink enamel... That'd look fab... (Not)

Quote:
Originally Posted by Patrick View Post
The e30zone guys didn't think doing the valves with the aid of a drill was a good idea but seems to have worked OK. Took all day doing it with a drill. We'd have been there all week if we did those by hand!
Yeah - I got a drill powered lapper to do mine. It attaches to the drill, but instead of just wizzing round and round it steps the speed down and spins about half a revolution one way, and then reverses. 20 secs in one position, move 90 degs and another 20 seconds in the new positon, and you're done. One of my better ebay purchases!

I remember doing an old rover V8 with my mate one time, and we didn't even bother using the stick - just stuck the valve in the port and then attached a cordless drill to the stem on the other side. Worked a treat!
Reply With Quote
  #38  
Old 28th January 2008, 09:20
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

hmm, guess it would have been better to do it that way (I did alternate directions while doing it) next time... (maybe not...)
Reply With Quote
  #39  
Old 28th January 2008, 20:23
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default


Camshaft inserted

New oil seal and o-ring for camshaft

Rocker shafts and rockers on their way back into the head - the head needs to be propped up so there is room for the valves to open as the last rocker needs the camshaft rotated to slide in. Also make sure the rocker shafts are at the right angle before rotating the camshaft otherwise its not easy to move the into the correct place.

Both rocker shafts in and the clips that hold the rockers in place. The spray bar as also been mounted.

A closer view of the assembled head

Everything now in place on the head, it just needs the rocker cover put in place to shield the inside from dust.
Reply With Quote
  #40  
Old 29th January 2008, 18:00
Patrick's Avatar
Patrick Patrick is offline
Senior Member
Enthusiast
 
Join Date: Feb 2005
Location: Hampshire
Posts: 2,457
Patrick is on a distinguished road
Default

New parts! Conrod bolts, main bearing shells, big end shells, water pump, cam belt and piston rings.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +0. The time now is 05:04.

copyright madabout-kitcars.com 2000-2020
terms and conditions | privacy policy