Cams?
- Thread starter 1UZ-HZ
- Start date
The 1UZFE EGR Delete Kit is available for sale here.
Well, that depends on the combination. What we can say is that the factory combination of the cams, higher compression and better exhaust manifolds made about 25-30hp more and probably 20tq. (using my estimation of 230hp/250tq for the first gen 1UZFE as installed).
Also of note is the split gear on the camshafts. These gears work to scissor together and in so doing eliminate all lash and create a very quiet operation. Aftermarket cams will need to keep this feature or noise will increase and valve stability will be reduced.
on paper the cam specs for the 2001+ 3UZFE VVTi appear identical to the 1998+ 1UZFE VVTi.
1998-2000 1UZFE VVTi (variable valve timing intelligent, all models, LS,GS,SC)
300hp/224kW @ 6000rpm and 310tq/418Nm @ 4000rpm
(IMO these are accurate numbers)
10.5 to 1 compression.
230 degrees intake duration (-14 ~36 BTDC, 64 ~14 ABDC)
229 degrees exhaust duration (41 BBDC, 3 ATDC)
Note that the intake cam timing adjusts throughout the RPM range and doesn't simply start retarded and then go advanced. The Toyota/Lexus tech sheets are complex on this.
Lambo, the GB section is way down on the main forum page. Here is the link you were looking for: http://lextreme.com/forums/showthread.php?p=14788#post14788
Yes, Endyn is working on the pistons. The majority of their focus has been on the Honda engines as from a business perspective that is a marketplace with people spending money for HP upgrades. The 1UZFE is not a common engine for modifications. Now, if someone were to pay Endyn to develop a cylinder head for these engines (they are busy and may not even consider the project) then Larry would be in a position to author such and article... but whether he would or not is another story.
As I have said before... Endyn/Larry Widmer is controversial... but, for my money there is a great deal of excellent knowledge to be gained from thoroughly reading that website.
One of the latest interesting examples of Endyns work... just happens to be on the Honda H22 engine, produced a reported 290.9 rwhp at 7750rpm from a naturally aspirated 2.3 liter. That is 126 rwhp per liter. If this same output could be achieve on the 1UZFE we would see 504rwhp (376 rw kW)!!!
Here is that link:
http://www.theoldone.com/forum/topic.asp?TOPIC_ID=16878
Lextreme II
Active Member
I have heard from JBrady that 95-97 LS400 Cams are has more lift and would be a nice upgrade for the earlier 1UZ.
The intake cam ONLY on the 95-97 LS400 and 96-97 SC400 has more lift and duration. Exhaust cam specs remain unchanged.
(still not certain WHY Lexus upgraded the LS400 engine in 1995 but waited until 1996 for the SC400?)
Cam gains an unspecified amount of lift... probably very little, with a best guess being 0.008"/0.10mm. Duration increases by 8 degrees.
1990-1994 1UZFE LS400 engine (1992-1995 SC400)
224 degrees intake duration (3 BTDC, 41 ABDC) apx .301"/7.65mm lift
229 degrees exhaust duration (41 BBDC, 3 ATDC) apx .305"/7.75mm lift
1995-1997 1UZFE LS400 engine (1996-1997 SC400)
232 degrees intake duration (6 BTDC, 46 ABDC)
Intake lift increases over previous design but likely no more than .309"/7.85mm,
I could not find specifics only that it was increased.
Exhaust lift and duration is the same as earlier design.
229 degrees exhaust duration (41 BBDC, 3 ATDC)
(still not certain WHY Lexus upgraded the LS400 engine in 1995 but waited until 1996 for the SC400?)
Cam gains an unspecified amount of lift... probably very little, with a best guess being 0.008"/0.10mm. Duration increases by 8 degrees.
1990-1994 1UZFE LS400 engine (1992-1995 SC400)
224 degrees intake duration (3 BTDC, 41 ABDC) apx .301"/7.65mm lift
229 degrees exhaust duration (41 BBDC, 3 ATDC) apx .305"/7.75mm lift
1995-1997 1UZFE LS400 engine (1996-1997 SC400)
232 degrees intake duration (6 BTDC, 46 ABDC)
Intake lift increases over previous design but likely no more than .309"/7.85mm,
I could not find specifics only that it was increased.
Exhaust lift and duration is the same as earlier design.
229 degrees exhaust duration (41 BBDC, 3 ATDC)
Lextreme II
Active Member
John,
How much gain do you predict with the 95-97 intake cam upgrade?
How much gain do you predict with the 95-97 intake cam upgrade?
Kelford Cams in NZ are working on cams now and were hoping for some to be available shortly. Landed price in Asutralia is expected to be around $1,500 the set.
Hopefully we will hear by the end of the month.
I don't think there would be much mileage in us all bothering them as they know we are hanging out for cams.
Hopefully we will hear by the end of the month.
I don't think there would be much mileage in us all bothering them as they know we are hanging out for cams.
Dreamkiller
New Member
$1500 sounds pretty good. Was expecting a figure of at least $2000
Will that be to the customers specs or blanks?
Will that be to the customers specs or blanks?
Whilst I appear to represent www.lextreme.com in discussions with Kelfords I do so in an unofficial manner.
I understand the cams can be ordered inwhatever grind suits you.
I stay in touch with them to see how things are progressing.
I understand the cams can be ordered inwhatever grind suits you.
I stay in touch with them to see how things are progressing.
I heard form Kelfords this afternoon and they hope to have some definitve answers within a week or two.
I have previously suggested we establish a "shim bank". If we all posted the shims we had but didn't need we could forward them onto someone who needed any of your surplus shims. I would suggest they be forwarded at Post cost and the "buyer" donate (say) $5.00 per shim to the Site.
This way you don't end up throwing away shims you don't want plus you save someone around $17.00 per shin and lastly you help the Boss run the Site.
I think it could work.
I have previously suggested we establish a "shim bank". If we all posted the shims we had but didn't need we could forward them onto someone who needed any of your surplus shims. I would suggest they be forwarded at Post cost and the "buyer" donate (say) $5.00 per shim to the Site.
This way you don't end up throwing away shims you don't want plus you save someone around $17.00 per shin and lastly you help the Boss run the Site.
I think it could work.
Peewee
New Member
That sounds good to me Rod.
I take it all factory shims are different thicknesses?
Also, I've always wondered what the best tool to measure the thickness is?
How much are the tools, and where can I get one?
It would be a good idea to have a US based place, and an Aust based place too.
But I would definately send mine in and swap them for others unneeded for $5 each.
Depending on price of cams, I hope to have a set by the end of january, if not, easter definately.
I take it all factory shims are different thicknesses?
Also, I've always wondered what the best tool to measure the thickness is?
How much are the tools, and where can I get one?
It would be a good idea to have a US based place, and an Aust based place too.
But I would definately send mine in and swap them for others unneeded for $5 each.
Depending on price of cams, I hope to have a set by the end of january, if not, easter definately.
Peewee, you need a micrometer, most good tool shops should be able to sell you one, there not real cheap thou.
and yer, shims are all different sized, even from the factory, there used to adjust the valve clearances, and even a brand new motor wont be 100% inspec, so the shims are used to get it in spec.
and yer, a shim bank sounds like a great idea.
and yer, shims are all different sized, even from the factory, there used to adjust the valve clearances, and even a brand new motor wont be 100% inspec, so the shims are used to get it in spec.
and yer, a shim bank sounds like a great idea.
Lextreme said:
Well, that depends on the combination. What we can say is that the factory combination of the cams, higher compression and better exhaust manifolds made about 25-30hp more and probably 20tq. (using my estimation of 230hp/250tq for the first gen 1UZFE as installed).
Also of note is the split gear on the camshafts. These gears work to scissor together and in so doing eliminate all lash and create a very quiet operation. Aftermarket cams will need to keep this feature or noise will increase and valve stability will be reduced.
Has anyone bought any cams from these guys (tmiller)
http://www.1uzquadcam.co.nz/
????
They claim to get 345rwHP out of their rally car with their 8 throttle bodies and slight head work... Just wondering if anyone has bought stuff from them, and what their experiences have been like?
would love to see some dyno sheets from their beast..
o and some movies..
http://www.1uzquadcam.co.nz/
????
They claim to get 345rwHP out of their rally car with their 8 throttle bodies and slight head work... Just wondering if anyone has bought stuff from them, and what their experiences have been like?
would love to see some dyno sheets from their beast..
o and some movies..
We have asked in other posts for some dyno sheets. As you know nothing yet.
I'd wait until I saw some figures before parting with any cash.
We all know head work, cams and improved airflow wil increase output, the question is how much for each and how much for the combined effort.
Another thing to think of with cams is how long will they last or do you need to buy all new valves?
I'd wait until I saw some figures before parting with any cash.
We all know head work, cams and improved airflow wil increase output, the question is how much for each and how much for the combined effort.
Another thing to think of with cams is how long will they last or do you need to buy all new valves?
SCV8 said:
on paper the cam specs for the 2001+ 3UZFE VVTi appear identical to the 1998+ 1UZFE VVTi.
1998-2000 1UZFE VVTi (variable valve timing intelligent, all models, LS,GS,SC)
300hp/224kW @ 6000rpm and 310tq/418Nm @ 4000rpm
(IMO these are accurate numbers)
10.5 to 1 compression.
230 degrees intake duration (-14 ~36 BTDC, 64 ~14 ABDC)
229 degrees exhaust duration (41 BBDC, 3 ATDC)
Note that the intake cam timing adjusts throughout the RPM range and doesn't simply start retarded and then go advanced. The Toyota/Lexus tech sheets are complex on this.
Lambo
Moderator
Pistons group buy
Lextreme,
Yesterday i found one on your posts about pistons,group buy etc, now i can't find it anywhere,not even in my ie history there was a link if i remember right that took me to this page, http://www.theoldone.com/articles/h22a_head/
is this where you have sent your head pistons etc, if so whats the chance of them doing an article like this one,on the 1uz ,the honda h-22 head is about the same cc 2.2l per bank, or could i apply this article to a 1uz, could what they have done to the Honda head be applied to a 1uz
Regards
Lambo
Lextreme,
Yesterday i found one on your posts about pistons,group buy etc, now i can't find it anywhere,not even in my ie history there was a link if i remember right that took me to this page, http://www.theoldone.com/articles/h22a_head/
is this where you have sent your head pistons etc, if so whats the chance of them doing an article like this one,on the 1uz ,the honda h-22 head is about the same cc 2.2l per bank, or could i apply this article to a 1uz, could what they have done to the Honda head be applied to a 1uz
Regards
Lambo
Lambo said:
Lambo, the GB section is way down on the main forum page. Here is the link you were looking for: http://lextreme.com/forums/showthread.php?p=14788#post14788
Yes, Endyn is working on the pistons. The majority of their focus has been on the Honda engines as from a business perspective that is a marketplace with people spending money for HP upgrades. The 1UZFE is not a common engine for modifications. Now, if someone were to pay Endyn to develop a cylinder head for these engines (they are busy and may not even consider the project) then Larry would be in a position to author such and article... but whether he would or not is another story.
As I have said before... Endyn/Larry Widmer is controversial... but, for my money there is a great deal of excellent knowledge to be gained from thoroughly reading that website.
One of the latest interesting examples of Endyns work... just happens to be on the Honda H22 engine, produced a reported 290.9 rwhp at 7750rpm from a naturally aspirated 2.3 liter. That is 126 rwhp per liter. If this same output could be achieve on the 1UZFE we would see 504rwhp (376 rw kW)!!!
Here is that link:
http://www.theoldone.com/forum/topic.asp?TOPIC_ID=16878
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