2T-GEU / 3T-C conversion

[styler]

the 262 had the kidney combustion chamber with matching pistons, the 260 has standard hemi combustion chamber with standard pistons.

[TheToyman75]

Willie,

As Styler has mentioned the combustion chambers on the 88262 head are different to the rest of the 2TG heads. I don't think the 88262 chambers will work with those high comp pistons. Any other 2-TG head will work fine so I'd stick to the 88260 head you already have.

[andurils_sheath]

On a side note if your 2t-g block is one of the later 2t-geu blocks the 3t crack should fit in fine. saves you worrying about the dummy cam and bearings and stuff.

Cheers

[wilson_610]

i was reading up on my heads... we have astablished that i will run my 88260 head.

but when i was reading up i came accros somethings that says that the 18rg head bolts straight up???

what is the truth to this thread?

mainly cos i have 2 heads. one is an 11111-88257 (casting is in the normal RHS of head)
the other is a 11111-88270 (this is the 18R-GEU head)

[w810sc]

The answer to the "will the 18R-G head bolt on to the 2T-G/3T block, or the 2T-G head on the 18R-G block" question, is no, it is not a straight bolt in process. Yes it can be modified to fit but you just wouldn't do it. If it has been done please correct me now.

Let me show you what i mean:
18R-G head:

Block:

taken from
www.geocities.com/motorcity/lane/1231/18rg2.html

2T-G head:

Block:

taken from:
http://www.toymods.net/forums/showthread.php?t=23283

Please pay attention to the water galleries and block stud locators.

fonzy

[wilson_610]

well thats one myth out of the way...

the next thing on my Agenda is what has been done and what is reconmended for a 88260 head.
Do i leave the valves as they are? or get them 3 angles cut?

I went to my local autopro store and enquired about valve springs and all they have is standard ones. (looking for Heavier ones. dont like the sound of valves bouncing)

Do they make a off the shelf kit? if so who by and a part no. would be handy.

i have yet to ring up crow cams or someone similar to enquire about what duration and lift would be best suited for my needs. but any hints on good cam profiles for a good torque motor but will still rev would be greatly appreciated.

cheers willie

[w810sc]

As for valve springs, forum sponsers:
Performance Springs
Wholesale prices to Toymods members!

Phone: 07 3206 3601
Fax: 07 3206 3601
Email: [email protected]

the ones you need i think are:
RR4 (i just copied and pasted it from their site)
1.325 .710 1.650:65
1.530:95

1.500:105

1.400:135
1.160:220
1.100:240

1.000:280
.895 302

http://www.performancesprings.com.au/46dualsprings.html

or stewart wilkens motorsports. Thats where i got mine.
There is a thread on cam profile, you may want to check that out for future reference.
fonzy

[TheToyman75]

As for valve springs Performance Springs are a club sponsor and there RR4 spring will most likely do the trick depending on how much lift your after.

This tit bit of info was buried under the photo of the Pistons

[wilson_610]

i have emailed allan about a set of springs.

as for the cams i have sent and email to crow cams, and cam tech enquring about what cams they think i need.

[wilson_610]

Due to this shit hole that i live in only has 1 decent machine shop that have any idea about motors, he can charge what he wants,

I told him what i was looking at doing, put my 88.5mm pistons in the 3t block, do all the things that you normally do when building a new race engine. and he looked at me and said , we will look at about $3000 and that will get ur bottom end done and then we can look at what you want to do with the head.....

Reality Check!!!!,

Hmmm well looks like that ideas gone out the window, and a silver top 4AGE, loom, std comp, afm, and a FWD g'box not that i will need it but still, came up for under 1 grand, now i im waiting for that to arrive so i can start working on putting that in before our hill climb in November,

[gearb0x]

engine work isn't cheap, but if you get a manual/do some research and do the build your self. Only getting engine man to do what you cant do your self, it'll greatly lower the price of the build

[w810sc]

wilson 610, whats the go, don't tell me your giving up on this killer 2T-G race motor of yours. I'm sorry to hear about the price on work to your bottom end, and yes $3k is alot of money, but for a "proper race engine" i would think that, that price is cheap (just an un-educated guess of mine) there are poeple out there that pump $20k+ into motors. If i where you, don't loose hope, do your homework, search around for other machine shops. Don't let me down, I was hoping to line you up with my 2T-G one day...
It saddens me when i speak to the older generation that has moved on, about when they use to own a 2T-G, the sence of "if i had the chance, i should have done it" always arises.
fonzy.

[wilson_610]

i still have the pistons and all the other stuff, so it may still be build, but on second yr apprentice wage it takes a long time to get that amount... but i im needing a decent hp increase so the silvertop will do till i can afford to build it.

so the thoght is still there but (sorry to the 2tg fans) the Te30 will be converted to a Ae30.

got to make up like 11 seconds, (bloody datsuns), but then he is running a 2.4 Stroked L series engine....

[gearb0x]

What are the classes you are you going for? that datto will be in the over 2ltr class which you wont be in with either engine unless its a motorkhana, where engine capacity doesn't matter so much.

I am personally installing a silvertop 20v into an ae71 for autocrosses ( it currently has a 2TG in it but like you, its gonna cost too much with too little gain so I'm going the 20v)

3T bottom end with them fancy forged pistons would make a good competitor in the vic 2ltr auto cross class anyway. I'm hoping my 20v with just an ECU & exhaust will get me near the front runners in Vic in the VCAS (vic club man auto cross series) 1600 class.

[wilson_610]

our classes are based on the PRC classes used in rallys etc, but cos then only the rally boyz cras would comply we (as in the club) made up our own classed, "Modified".

yes the datsun is in mod 2 and i will be only in mod 1, but im going for line honours.