SWIFT BOT-"low Comp Head Build"

[virqai]

This head owner buy from his friend...over heating failure...

Water compress coz????????I exs valve snap

Start with cleaning(no pics).....take measure...

Grinder to take out old surface....

Start to TIG weld...Step first weld all water hole...

For those who do tig weld must more understand how important the grounding...when its been hot,weld frequency problem..here the fast way i cold its...hu..hu..

Second step..weld out line,make its as guide for thickness weld...

Take random measure thickness....setting/adjust/etc weld machine

Third steep..start to weld all out line...

4th step...start to fill all surface...

5th step...start to weld combustion camber line...

Done...

Grind wave...when milling proses we dont want bounce milling bits that can coz bits snap...

Can see (arrow) and combustion camber thickness have add with weld job,tomorrow if have time i will milling before continue with Port and Polish...
:vroam::sleep:

 

[har1th7]

nice job, kudos.... reduction of comp. ratio?

 

[bera]

nice job...but errr...isnt it better to use a thicker head gasket rather than "welding" it...??

 

[^pomen_GTR^]

virgai's work always make me him

 

[l2s_turbo]

No doubt it's a hefty work, but just one question bro.. will the head overheated and starts to warp later? Because i'm starting my project soon too with the same platform..

 

[romen_]

o.O

No low-comp pistons available?

How high is the target boost?

 

[virqai]

Skimming..first using stone bits...

Using school chalk(orange) for marking,easy to see surface that dont touch..if to deep then i need to add weld back..

Lucky not to deep,can skim bit more...but still have some area not touch...not to deep..

Done skimming using stone....

Second skimming using bits...

Oiling all surface for marking...

Done...but still need to do lapping proses to get smooth surface...can see there still have hair line...its bcz hard material thats bits need to cut..

Here sample some material cut pics...

Here pics after first lapping done....

After minor lapping proses done,there still have small scratch,but its does't matter,..will refine at final touch.

Cut and clean out all balance out line webbing weld...

Start to buffing intake port...

Last work before back...Polishing some valve...

And lapping head a bit more...can see diff,now surface more smooth...

Skimming..

Lapping...

 

[virqai]

virqai's work always make me him

Hahaha...and big thanks for always here,my mate..

---------- Post added at 09:44 PM ---------- 6 hour anti-bump limit - Previous post was at 09:35 PM ----------

nice job, kudos.... reduction of comp. ratio?

thanks mate...ratio..me also not know yet,need to find original spec and calculate...what ive got info from owner for bore X stroke is 78x78....just i have taken note for combustion camber by mill water...

---------- Post added at 09:57 PM ---------- 6 hour anti-bump limit - Previous post was at 09:44 PM ----------

o.O

No low-comp pistons available?

How high is the target boost?

don't know have or not.just money only...heee....,i'v see the std piston pics taken by owner,oem piston also not to high and i think its std static comp also must be something like 9.+ only,that is what i guess la...for turbo boosting..what owner plan me also have ????..for me that is hard to say,diff turbo got diff boost AR..

---------- Post added at 10:43 PM ---------- 6 hour anti-bump limit - Previous post was at 09:57 PM ----------

nice job...but errr...isnt it better to use a thicker head gasket rather than "welding" it...??

which want better??? i don't want to coment....but i be always stick with this way...actually at first time i do this at past is for lorry head.that time no new head sell.and some of model also can't skim coz diesel camber to hard(like mits canter) and i can change its with other model like toyota that more easy to find...and have some friend that do BOT lorry for heavy job...and good feed back from them...
after that i start try to car head,sr20,vtec,etc etc..and more...but honestly to say during all that learning proses, so many thing that i need to RND not just simple weld like that mate...heee that pics all i post look easy work yeah..heee...need to consider about Heat not to ++ and--, not to leave its sudden cool till i need to design table work for this weld job only with some attachment acc...AC weld we need heat,but to much heat will coz material melt prob,warp valve seat,then u need to regrind,if to much, afraid your valve spring will not support...hahaha..what u read now also will make u 'pening' rite +++ my bad English and bad explain....haaahaha.....sorry for that mate..

---------- Post added 11-05-2012 at 03:07 AM ---------- 6 hour anti-bump limit - Previous post was 11-04-2012 at 10:43 PM ----------

No doubt it's a hefty work, but just one question bro.. will the head overheated and starts to warp later? Because i'm starting my project soon too with the same platform..

 

[virqai]

Some update....PNP work

Hot side port and polish....

---------- Post added at 01:19 AM ---------- 6 hour anti-bump limit - Previous post was at 01:07 AM ----------

Intake port and buffing....

stright cut port runner.....

Next CC work...waiting gasket for marking to cut match combustion camber also for new water hole....adioz :-)

 

[madew]

48 thumbs up...

Sent from my GT-N7000 using Tapatalk 2

 

[virqai]

48 thumbs up...

Sent from my GT-N7000 using Tapatalk 2

T.Q....Update for today.....

Make new water hole matching using gasket...

4.8mm drill bits for high pressure side...

8mm drill bits for low pressure side....

---------- Post added at 03:16 AM ---------- 6 hour anti-bump limit - Previous post was at 02:45 AM ----------

Combustion Chamber Port and Polish....

Before &&& After PNP...

Polishing valve done, pics with head....

BEFORE &&&&& AFTER TIG job....

STD &&&&& BUILD.....

 

[bera]

superbly done...finishing better then factory...

 

[szekeiemme]

simply AMAZING!

 

[nadziad]

3++ or 4++ hp ni....very nice

 

[madew]

Naisss

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[TitanRev]

Great job there.....

 

[Rafale]

This is cool, superb skills

 

[virqai]

superbly done...finishing better then factory...

Big thanks mate...

simply AMAZING!

3++ or 4++ hp ni....very nice

hhhaaa...no la,just play2 only...

Naisss

Sent from my GT-N7000 using Tapatalk 2

Great job there.....

:top:

This is cool, superb skills

:top::bebored:

---------- Post added at 01:10 AM ---------- 6 hour anti-bump limit - Previous post was at 12:55 AM ----------

Update....

Test valve leak before regrind...

Regrind valve..blow air at valve lips to check leak...no bubble..ok

Block...have some area x even surface no 2,3 sleeve..check using aluminium bloc and filler gap..

After resurface block done...

---------- Post added at 01:49 AM ---------- 6 hour anti-bump limit - Previous post was at 01:10 AM ----------

Head install to block...

Pics..before take out head...running Engine..at this temp, i take the reading for static comp...

This swift already BOT..but have some issue,then need to redo...here(old setup) comp test with 2 pieces metal gasket 0.5+0.5=1mm...

Some other work for this swift during install head work...delete heater pipe...

Make new air bleeding...(next time upgrade...must to custom this pipe for new place for termostart)

Cover timing chain Before &&& after...

Water jacket modified...(i don't want to trust the oil ring..if its failure so water will enter to chain cover and mix with oil)
So its better to separate the stopper..

---------- Post added at 02:43 AM ---------- 6 hour anti-bump limit - Previous post was at 01:49 AM ----------

Put back all the stuff...Here the BOT set when its come... so for next upgrade will change turbo,header,intercooller and pipe etc-etc..
to settle clearance issue...after head swap and with old engine tune,this car have test at sic and thanks to 'god' some of the big issue Heat and Boosting prob gone...

Here some Pics that's maybe swifter owner's want to see...inside timing chain...

Question and help needed..."Oil drain from turbo to oil sump Location"
this pics show where the oil drain plug locate...i think the best place for the drain plug is more upper then oil level,its will help oil to drain easy without need to blow the oil in sump...correct me if i'm wrong...

This is what i found inside all the intercooler pipe..

This is new place that i plan for next upgrade...how about thats..????:questionmark:

That all for now..till next upgrade....ADIOZ....:vroam:

 

[madew]

Cant wait to see the next upgrade... Hehehh

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[Tom]

thanks for the documentary virqai, that is some major engineering work. it's tedious to document the process especially when working on a project, but actually having these pictures and captions and to be able to share with people who appreciate builds like us, it's priceless.

please continue to share the progress of this turboed swift. i'm very eager to see the results

kudos