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Location:
Rocklea qld
Registered:
February 2003
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ATTN: 18rg and rgeu experts...please tell me what i have???
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Sat, 13 November 2004 07:50
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recently picked up some 18rg parts..first one i want to know about it i have a head that is 88230...is that good and rare or hard to get etc??? also what are the cams like in them..they look to have huge lift etc.is there any numbers i should look for...they have 88231 on them...what compression engine did they come on...any good points about them
i also have lumpy cam in a head..you can see its been grund down..how do i tell the lift etc on them???
how do i tell the compression of pistons by looking at them???any numbers etc so i can figure out what is what
plus anything extra anyone can tell me to look for to find out what is good etc like crank work and porting...and i need to know what block is for what head as my heads arent on the blocked...i have 2 88250 head, 1 88270 head and 1 88230 head
all help would be great
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: ATTN: 18rg and rgeu experts...please tell me what i have???
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Sat, 13 November 2004 10:24
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| people100 wrote on Sat, 13 November 2004 18:50 |
i also have lumpy cam in a head..you can see its been grund down..how do i tell the lift etc on them???
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1) measure the diameter of the base circle.
2) measure from top of lobe to base circle on other side of cam.
subtract 1 from 2 and you have lobe height, which if it is direct actuation, is valve lift.
Cya, Stewart
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: 18rg and rgeu experts...please tell me what i have???
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Sat, 13 November 2004 10:36
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sounds easy enough
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: 18rg and rgeu experts...please tell me what i have???
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Sun, 14 November 2004 02:32
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bump peoples...i cant find much details as to what heads, cams etc are better and why
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Location:
Brisbane
Registered:
October 2002
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Re: ATTN: 18rg and rgeu experts...please tell me what i have???
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Sun, 14 November 2004 03:43
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> Here's some head numbers off Al's 18RGs:
>
> 88250:
> - 49657 single spring early rgu single dump ex ok head small studs on ex
> - 52978 same as above
> 88253:
> - 73086 double spring late rgu good head to start with large studs on ex
duel dump man
> - 62744 single late rgu still good head may be small stud ex should be
single dump
> - 81784 double spring late also
> - 87278 double spring late also
> 88270: these are ale efi heads all double springs alll good heads these
are the ones you use
> - 35140 biggest ports biggest valves no smog ports best casting
> - 08037
> - 49383 very late head newest ive seen
> ?:
> - 81225 same as above double late rgu if the head is a 11111-88253 not a
11111-88270
> 88253 88270s would be the heads of choice since these need very little
work from the factory these willl make lots of power with little porting
they will make a lot more power with a lot of porting the castings are a lot
thicker around the ports so there is a lot of room
the 88250s can be made good but the ex studs should be changed up to 10mm
ones for best sealing
all of these engines should have 8.5s to 1 but the efi 88270 heads they
should have 8.3 to 1
just be glad you dont have any of those 11111-88230 or 88210 heads they are
good paper weights
hope this helps your info of what you got there sounds like my garage
i think i have 15-18 heads right now
cary
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: 18rg and rgeu experts...please tell me what i have???
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Sun, 14 November 2004 05:38
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thanks phil...i did find that after i posted..
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Location:
Hobart
Registered:
June 2002
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Re: ATTN: 18rg and rgeu experts...please tell me what i have???
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Mon, 15 November 2004 01:49
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88231/2 cams are one of the early cams with higher duration and lift.
Want to sell them to me? 
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Location:
Rocklea qld
Registered:
February 2003
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Re: ATTN: 18rg and rgeu experts...please tell me what i have???
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Mon, 15 November 2004 08:46
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| RA40Celica wrote on Mon, 15 November 2004 12:49 |
88231/2 cams are one of the early cams with higher duration and lift.
Want to sell them to me?
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pm me so we can talk...i have the 88230/1 cams plus some reground lumpy 88250 cams...i dont know which ium keeping yet but ill be happy to sell u the other pair
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